My Time at Portia Wiki
My Time at Portia Wiki

Petra's Home

Petra's home

Originally from Ethea, Petra has been traveling all over the known world. For someone so young, she's seen and learned more than most people do in a life time. Petra has only one goal, which is to study relics left over from the past and see if they can bring telesis to society. She eventually came to Portia to study under Merlin and be closer to the Peripheries, hoping to find computer AIs from the past.

Petra is a resident of Portia that the player can befriend and eventually marry.


Personal Summary[]

Petra was born on Day 11 of Winter in Ethea. Petra likes to research old Data Discs to discover forgotten blueprints.

Petra typically disapproves the teachings of the Church, seeing as she wants to use technology to better the world. However, she does agree to the idea of destroying dangerous technology after witnessing one of the technology blast a hole on the wall at Vega 5, though she still wants to study it first.

She can often be found in the Research Center or sitting on a bench in Central Plaza. Players can bring her mysterious Data Discs and she'll gather information from them. Within a few days, one should get the results in the mailbox.

Physical Appearance[]

Related Characters[]

Petra's closest connection in Portia is Merlin, her Friend, mentor, and fellow researcher at the Research Center. Like Merlin, Petra harbors feelings of dislike toward Lee, the head of the local church who opposes the work of the Research Center.


When befriending Petra, her relationship network with other NPCs will also be affected, resulting in the player receiving or losing favor points with those NPCs as well.


Petra typically remains in the Research Center throughout the day. Near evening time, she exits the Research Center to do other activities, such as shopping at Martha's Bakery or reading a book under the tree in Central Plaza.

Some nights she can be seen at the cemetery's entrance, walking around a stone pillar for hours.

Her home is in the center of town, between the park and Dr. Xu's Clinic, and is open from 7:00 AM to 21:00 PM.

Time Location

Time Location
13:00 Works at Research Center

Time Location
18:30 Leaves Research Center to arrive at Martha's Bakery by 19:15.
19:15 Shops at Martha's Bakery.
20:00 Leaves Martha's Bakery to arrive at a bench in Central Plaza by 20:45.
20:45 Reads on a bench in Central Plaza.

Time Location
7:00 Works at Research Center.


Petra is one of the potential bachelorettes that the player can romance.

Upon reaching Friend status at four full hearts, the player can confess their love to her with a Heart Knot. If the confession is successful, her relationship status changes to Girlfriend. After Petra has become the player's girlfriend, upon reaching Lover status at eight full hearts, the player can then propose to her with a Wedding Ring. If the proposal is successful, her relationship status changes to Wife. Once certain other conditions have been met, Petra and the player can then try for children.

Additionally, upon meeting certain relationship levels, certain perks are rewarded.


Friend StarStarStarStarStar 2Star 2Star 2Star 2Star 2Star 2
Receive a 10% discount when consuming in the store
Good Friend StarStarStarStarStarStarStar 2Star 2Star 2Star 2
Receive a 20% discount when consuming in the store
Lover HeartHeartHeartHeartHeartHeartHeartHeartHeart 2Heart 2
Receive a 25% discount when consuming in the store
Wife HeartHeartHeartHeartHeartHeartHeartHeartHeart 2Heart 2 +Wedding Ring
A chance at receiving gifts first thing in the morning

Social Interactions[]

Interactions: Chat Gift Desires RPS Invitation Play Date Dine Interact Photo Ride Relic trade Confession Propose Research Missions

Click on the icon to go to the respective section.

Social talk Chat[]

Dialogue →

Chat is a basic social interaction available at any relationship level. Chatting with Petra once a day can increase her relationship by 1 point, or 2 points with the Smooth Talk skill; subsequent chatting, on the same day, only results in the same conversation without any relationship gain.

Petra's dialogue may change every day and every season. Petra may also comment about certain events or missions. Higher relationship levels, including romantic involvement, also change Petra's dialogue.

Social gift Gift[]

Giving gifts to Petra affects the player's relationship with Petra. Every character has unique gift preferences.


  • Every giftable item, except for the items below, will have a Neutral (+1) effect when given to Petra.
  • Gifts given on festival days and on Petra's birthday will earn the player 2x and 3x relationship points, respectively, and will show a unique dialogue.
  • Values listed below are without The Giver skill, which gives an extra point.
  • Petra doesn't care for Ruby, Sapphire, or Topaz, unlike most
Social gift Gifting Items
Gift LoveLove: +20
Toy RobotToy Robot
Gift LoveLove: +18
Gift LoveLove: +15
Gift LoveLove: +12
Fish SubFish Sub
Gift LoveLove: +10
Monster ToyMonster Toy
Power LampPower Lamp
Gift LikeLike: +8
Gift LikeLike: +6
Gift LikeLike: +4
Data DiscData Disc
Gift LikeLike: +3
Gift NeutralNeutral: +1
Gift iconEverything Else
Gift DislikeDislike: -1
Gift DislikeDislike: -2
Vegetable SaladVegetable Salad
Gift HateHate: -5
Listed values are without The Giver skill, which gives an extra point.

Desire head icon Desires[]

The following items are desires, or wishes, which are randomly assigned to one or two characters per week. The player is required to be at least at Good Friend level with Petra for her to be assigned a desire. Some characters may desire an item that they do not normally like.

In the event that Petra has a desire, gifting the wanted item will provide the higher tier points; otherwise, on non-desired events, the item gives the base point value. The birthday or festival day relationship bonus applies when gifting a desired item.

Desire head icon Desires
Minimum Relationship Level Possible Desires

Good Friend

Toy RobotToy Robot (+30)

Social RPS RPS[]

Petra can play RPS with the player up to three times per day. Petra is eligible for Rock, Paper, Scissors.

The daily count to play is three games.

Social photo Photo[]

Group photo
Group Photo →

Petra can partake in group photos with the player after reaching the Associate level.

  • More poses are unlocked by reaching higher relationship levels.
  • Romance poses are unlocked by becoming partners.
  • The "Photographer" skill can fully unlock all poses, regardless of relationship or romantic level.
  • All poses can be viewed in Petra's Gallery page.


Social play Play[]

Once the player has become buddies with Petra, they can schedule a play date together.

Social date Date[]

After the player has successfully confessed how they feel to Petra, the player can schedule a romantic date with Petra.

Social Dine Dine[]

If the player chooses to dine at The Round Table with Petra during a play date or date, it is recommended to order dishes she will like. If asked before ordering, Petra will sometimes tell the player exactly which dishes to order; other times, she will just give little hints. In the event that Petra does not specify the exact foods desired, the player should order between three and six dishes, depending on what hint she gives. It is recommended to order each of those dishes from different courses, ex. ordering one Appetizer, Meat, Vegetable, Dessert, and Drink course each, rather than five Desserts.

Petra's food preferences are listed below. The player is advised to use these preferences only when Petra does not tell the player what to order. If Petra tells the player a list of dishes to order or gives a hint, it is advised to follow her wishes instead. The full restaurant menu can be found at The Round Table page.

Play date eat Dining
Mount Very HappyLike
Mount NeutralNeutral
Everything Else
Mount Very UnhappyDislike
Main course
Main Course
Mount Very HappyLike
Mount NeutralNeutral
Everything Else
Mount Very UnhappyDislike
Mount Very HappyLike
Mount NeutralNeutral
Everything Else
Mount Very UnhappyDislike
Mount Very HappyLike
Mount NeutralNeutral
Everything Else
Mount Very UnhappyDislike
Mount Very HappyLike
Mount NeutralNeutral
Everything Else
Mount Very UnhappyDislike
Mount Very HappyLike
Mount NeutralNeutral
Everything Else
Mount Very UnhappyDislike

Social research Research[]

Main article: Research Center

Petra's unique trait is the ability to extract data from Data Discs. After discovering a Data Disc and taking it to Petra, Petra can examine the data from the Data Disc and provide a new blueprint for the player's workshop. Petra needs a number of Data Disc per blueprint in order to extract new blueprints.

Research Notes[]

Research NotesResearch NotesAfter collecting all the blueprints available from Petra, she will speak of trading Research Notes to the player. These can be acquired at the Exchange in the Research Center for 10 Data Discs apiece.

Social interact Interact[]

As the player develops their relationship with Petra, special interactions are unlocked, including Hug and Kiss.

Social Relic Trade Relic Trade[]

Petra occasionally uses the Relic Pieces Exchange board at the Museum to trade for relic pieces. Petra likes to look at particular completed relics, so after the player has donated such relics to the Museum or displayed them in their yard, Petra may come visit the Museum or the player's yard to view these relics. Such visits will earn the player relationship points each time, with the amount dependent upon the relic.

Social Relic Trade
Relic Trade
Points Relics
Requested Pieces +30 Sphere Trophy Piece 1Sphere Trophy Piece 1 Sphere Trophy Piece 2Sphere Trophy Piece 2 Sphere Trophy Piece 3Sphere Trophy Piece 3
+10 Monster Toy Piece 1Monster Toy Piece 1 Monster Toy Piece 2Monster Toy Piece 2 Power Lamp Piece 1Power Lamp Piece 1 Power Lamp Piece 2Power Lamp Piece 2 Power Lamp Piece 3Power Lamp Piece 3 Fish Sub Piece 1Fish Sub Piece 1 Fish Sub Piece 2Fish Sub Piece 2 Fish Sub Piece 3Fish Sub Piece 3
Favorite Exhibits +???
Monster Toy
Monster Toy
Power Lamp
Power Lamp
Fish Sub
Fish Sub

Social mission Missions[]

Spoiler Alert: This section may contain spoilers. Proceed with caution!

Legend: Main Mission NewSecondary Mission New major • Main Mission LocationSecondary Mission Location minor • Social play friendship • Social date romance • Social research research

  • Main Mission New Main missions are listed in chronological order, based on the chronology list.
  • Secondary Mission New Secondary missions are listed in alphabetical order.
  • Major involvement is defined as being directly involved, is one of the main character, actively participates (such as following), or talks a majority of the time.
  • Minor involvement is defined as indirect involvement, only assigned as a task (such as delivering a product to the character), gives a mission or rewards but does not continue involvement, or only talks a couple of times.
  • Indented missions indicate succession of the previously listed mission. Further missions in its timeline are in chronological order.
  • Research missions are denoted by the Social research Data Disc icon if Petra's sole purpose is researching.

Main missions[]

Main Mission New Mysterious Data Disc
I'm not sure what this is, maybe I should go to the Research Center and ask around.
Main Mission New The Archaeologist
Got a piece of something when digging, go to the Research Center to ask Petra what is this.
Main Mission Location Assemble Dee-Dee Transport
We are in need of a three-wheeled Dee-Dee vehicle for the city transportation system.
Social research Diagram for Dee-Dee Stop
Talk to Petra at the Research Center about how to make a Dee-Dee Stop sign.
Social research Panbat Infestation
Dawa's Tree Farm is currently closed due to the Panbat infestation, help him chase off the Panbats.
Social research Saving the Tree Farm
Aadit wants an Irrigation System for the recovery of the Tree Farm.
Social research Carol's Sewing Machine
Carol's old sewing machine is broken and she wants you to help her fix it. Talk with Petra to see what you can do.
Social research The Desert Wind
South Block is in need of some wind generators to generate electricity, build and install 3 of them.
Social research Balloon Bonanza
Mayor Gale wants to build a hot air balloon ride for Portia and has asked for your help. Find Petra, maybe she can help you with what you need.
Social research Long-Haul Bus
We're in need of a Long-Haul Bus for the newly opened Portia to Sandrock route.
Social research To Light the Way
Talk to Petra about the construction of the lighthouse.
Social research The Harbor Crane
A mechanical crane is needed for the new Portia port. Albert suggested that you consult with Petra first.
Main Mission Location The Burnt Warehouse
A warehouse has been burned and the air cooling relic inside was destroyed. Albert wants the player to help make a new cooling unit. Talk with Petra first.
Main Mission New An Uplifting Gift
The Civil Corps have dug out a mystery gift box in the Ruins, and it requires some specific chips to open. Help prepare what Marlin needs.
Main Mission New Install the Face-lifter
Merlin wants you to install the Face-lifter in Dr. Xu's clinic.
Social research Hot Springs Retreat
Gale hopes that you can help build the Hot Springs Retreat on the Western Heights. Wait for Albert's commission in the mail.
Social research A Boat to Starlight
We're in need of one propeller-less boat for travel to Starlight Island. The boat must be propeller-less! Check with the Research Center to see what they can come up with.
Social research The First Key
Ursula wants you to enter the ruins of the logging yard to help see and open the door that cannot be blasted in the ruins.
Social research The Landing Gear
An airplane requires a Landing Gear. Ask Petra about how to acquire it.
Social research Power for All Source
All Source's power supply was damaged during the battle with the Rogue Knight. You need to help her rebuild one.

Secondary missions[]

Secondary Mission Location An Interview with the Research Center
Mei would like to do an interview with the Research Center. She needs you to take pictures.
Social research Construction Crane
Albert needs your help to build a Construction Crane to construct the Portia Museum.
Secondary Mission Location Chip Upgrades
Ack seems to have something to say about his tasks.
Social research Emily's Well
Emily has asked you to build a well and a water pump. She would also like a water storage. Talk with Petra about the well and water pump designs.
Secondary Mission Location Finding Happiness
Ack seems down, talk with the Mayor to see if you can do anything for him.
Secondary Mission Location Flowers for Mother
Help Gust collect some Hibiscus Flowers.
Social research Made Whole Again
Ack's temporary leg is no longer able to support him. Help him build a new leg.
Social research Read All About It!
Find a way to help Mei speed up the production at Portia Times.
Secondary Mission New Stories of the Old World
Petra's also interested in non-technological items from the Old World, if you find any in the ruins, show it to her.
Social date Stories of Petra
Petra lost an item but is too embarrassed to tell you what it is. Go to her usual spots to see if you can help her find it.
This mission triggers after Stories of the Old World.
Social date Stories of Togetherness
Petra left some hints with other people for a message to you. You'll need to talk to a them to figure out what the message is.
This mission triggers after Stories of Petra
Secondary Mission Location The Secret of Planting
After the Autumn Festival, Emily wants to find a bigger fruit crop to plant, help her find the seed.
Secondary Mission Location What Went Down
There's something not quite right about the robot situation. Go ask people related to the Research Center for their opinion.

Commerce commissions[]

Petra may post a commission on the commission board in the Commerce Guild. Below is a list of possible commissions.

  • Data is extracted from the database.
  • Rewards do not account for the skill Commerce Hot Shot, which increases the rewards output.
  • Some items with the same quantity may be listed twice, but each offer a different deadline or rewards.
  • Petra will sometimes give the player a gratitude gift for completing a commission.
Social secondary mission Commission List
Commission Rewards
Item Level Deadline RP
Prompt happy
Prompt guild
Copper WireCopper Wire (x3)
5 days 11 40 180 31


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