Kaisei Species: Youkai(?) A young man who Sikiso (main character) found washed up on the shore. Despite having no memory of who he is, he maintains a positive, upbeat attitude, never sweating the small stuff. Sikiso also gave him his name. Kaisei is curious by nature and loves to learn about both humans and youkai. Like Sikiso, he can understand Astromates, although nobody seems to know why. ("You two really are strange." -Kutara) Kaisei has an unearthly appearance, with incredibly pale skin and odd-colored eyes (one gold, one blue). Lacking anywhere else to go, he is currently staying at Sikiso's place.

Astromate (Descended from alien life forms)