He's My Only Vampire, Vol. 2 — Aya Shouoto

You are bound to each other by a crimson chain. Never, ever forget that. When Dealer Swallow suddenly appears, Kana learns in the ensuing scuffle just what it means to be a pureblood vampire's 'thrall.' With the lycanthrope Jin now fighting beside Kana and Aki as an ally, the three begin their search for the other Stigmas in a dangerous quest...