Pig Tag

 is a special gift that can be given to QQ to rename him, if the player is married to Gust.

Obtaining
The can only be bought from the Mysterious Man if the player is currently married to Gust. If not, then QQ-related items do not show up in the Mysterious Man's store.

Usage
The can be gifted to QQ for +10 Relationship. Gifting it to him will also allow the player to rename him, if QQ has already come to live with the player.