Yokio Stories

(YN) Okumura has always been a foster child and saw her father dead and her oldest brother Rin engulfed in blue flames what happens when she finds out about who she really is the daughter of saton and the queen of demons and that her two brothers are alive.

we know the two twin demon sons of satan but where there really just two....? (I do not own the characters except for Sazama) [and the chapters are short and I'm sorry]