Here's what it means!!
kins / irls / are basically like attachments ppl get to characters or ppl and form memories as that character, or some may seem them as past lives! irls are more of an unhealthy delusion tho ,, (i think)
there's plenty of carrds that explain it better., but that's kind of(?) Like the gist of it! m a fictionkin (basically the "kinning" in this context) of mari, sayori and Callie (splat toon,) fun fact for you :3