Yume Aruki (ゆめあるき)/theories

Twill is a Youth

 * Her dreams are much more light in tone than most other fangames, to the point of noticeable near-absence of blood, or chasers.
 * Her effects point to a hobby of dressing up. Almost all of them are cutesy cosmetic effects that feature special animations.
 * This theory puts her in the age range of 10-14, where she'd be a lot less likely to be edgy.