User blog comment:Holokami/Psychena/@comment-4867780-20160402010439/@comment-26993961-20160402093221

Crafters are like the developers and modders of Psychena created by Filicia. They keep their respective thing (mountains/summer/clothing) functioning and stable as Psychena's form shifts by itself, while also adding more or changing it as they please.

For example, due the intangible nature of Psychena, the Crafters are the ones responsible for adding and maintaining the "collision effects" of the forms in Psychena, so the inhabitants don't simply walk through everything.

More examples, ^^ : Since their are no real seasons in Psychena, it's up to the Season Crafters to make the seasons, or what feels like them. Since there also can't be any hot, cold, or physical elements in Psychena, its also up to the crafters to make things which feel like those. The skies and "light" levels of day and night are really nothing more than very fancy illusions created by crafters.

As for how they live that long without getting bored. I'll be honest, I haven't quite decided on that yet. ^^;