Tanmoku Ki returns to his family home for the first time since making a pact with his new spirit shadow, You Keika. However, aside from Tanmoku's grandmother, who welcomes Keika with happy tears, the welcoming mood in the sprawling mansion is noticeably stiff. Keika learns that there is a complicated relationship amoung the members of the Tanmoku family and even their retainers. Meanwhile, a mysterious man and woman appear and corner Keika. What on earth could their goal be?
The weak cannot survive without the strong.
لا يمكن للضعيف النجاة بدون القوي
Die Schwachen können ohne
die Starken nicht überleben.
Los débiles no sobreviven
sin los fuertes.
Los débiles no sobreviven
sin los fuertes.
Les faibles ne peuvent
vivre sans les forts.
I deboli non possono sopravvivere senza i più forti.
Os fracos não podem 
sobreviver sem os fortes.