純血＋彼氏 [Junketsu + Kareshi] Series by Aya Shouoto

When Dealer suddenly appears, Kana learns in the ensuing scuffle just what it means to be a Pureblood vampire's "thrall." With the werewolf Jin now fighting beside Kana and Aki as an ally, the three begin their search for the other Stigmas in the second volume of this dark vampire adventure!!

Upon Eve's invitation, Aki agrees to attend the Soiree on his own. However, Kana and Jin aren't far behind, trailing him in secret. Then, at the climax of the blood-drenched ceremonies, Kana's "Awakening" begins at last!

(Volume 7)"You said you loved me, right?" Kana is heartbroken as Aki treats her with cold indifference after losing all memory of her and their time together. Amid this confusion, Eriya--Aki's younger twin brother said to have been put in sleep stasis after being nearly killed by Aki--makes his entrance!! What will happen when the blood-soaked vampire twins finally meet again?!

"To think that sharing her with you would let me experience such unthinkable highs...!"At long last, Aki has regained his memory. However, he and Kana are faced with a painful truth--all along, Kana has actually been Eriya's thrall! Amid the chaos, the final Stigma appears, and the bloodred ties that bind the players in the game tighten to a stranglehold!