He's My Only Vampire Series by Aya Shouoto

Takachiho Kanami who attends a distinguished private school is bright, well-behaved and extremely soft-hearted no matter what the time. She's neat, and doesn't seem to have any problems, but she carries a darkness within her heart. On the night of the full moon, the world around her starts to grow loud. The meeting that changes Kanami's fate is already drawing close.

Takachiho Kanami who attends a distinguished private school is bright, well-behaved and extremely soft-hearted no matter what the time. She's neat, and doesn't seem to have any problems, but she carries a darkness within her heart. On the night of the full moon, the world around her starts to grow loud. The meeting that changes Kanami's fate is already drawing close.

Takachiho Kanami who attends a distinguished private school is bright, well-behaved and extremely soft-hearted no matter what the time. She's neat, and doesn't seem to have any problems, but she carries a darkness within her heart. On the night of the full moon, the world around her starts to grow loud. The meeting that changes Kanami's fate is already drawing close.

'Take care... for your blood...is sweet... 'The angels Isuka and Hitaki have been targeting Aki all along! In order to 'purge' the pureblood vampire, they bring their Swords of Judgment down upon him! Will Kana be able to help Aki out of what appears to be a life-threatening situation...for them both?!

"Forget all love and thirst only for blood..." Acquiring a third Stigma took a heavy toll on Aki's body. To help him recuperate, Kana and the others plan a trip to a cozy hot-spring resort deep in the mist-shrouded mountains. Little do they know, this outing will open the sinister door of Aki's "original sin," and his hidden past will finally come to light!!

'Forgive me. I can no longer love you prettily......' After Kana regains her memories at Tsubakiin Manor, her feelings for Aki become colored by their shared past. Meanwhile, Aki offers Mishio a certain 'deal' in order to rescue Kana. Where will Kana and Aki's rapidly developing destiny lead them?!!

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?!

'I will restore your love to you......'When Eriya offers to help retrieve Aki's memories, he and Kana begin spending quite a lot of time in each other's company. But seeing the two of them cozily conspiring together, Aki finds himself becoming strangely irritated-despite the fact that he's said to have lost all recollection of his love for Kana. And with that, the threads that bind the three together grow ever more tangled......

'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!

Born together and locked in endless struggle...that leaves us but one fate...Envy, the final Stigma appears at last...on Kana! To protect her, Aki resolves to battle Eriya in earnest and sets out for Tsubakiin Manor. The tale of the love and blood red bonds shared by the beautiful vampire twins and their thrall comes to a thrilling conclusion!