Marriage/playdates

A way for the Aavegotchis to gain extra kinship between each other. They have a 50% chance to gain +3 kinship points by pairing them up together for 24 hours. 50% chance for 0 kinship points. No harm done.

There's probably a much more interesting and intelligent use of gotchi pairs beyond kinship xp waiting in here, but I can't see it. Maybe a Teamfight Tactics game. Or pairing them up to create something like an item.

Hire a proper game designer who has tested this before.

The complex way would be to add a double edged sword and make weird combinations between gotchis. 2 Zen ones have a 50% chance to gain +4 kinship points among each other and risk only gaining +1 point. 2 aggressive ones have a 50% chance to gain +9 points, but risk losing 4 points. A zen and aggressive one have a 50% to gain +16 points but risk losing 8 points.