Itsuka Tenma no Kuro Usagi Portable

In his first year of high school, Kurogane Taito is a young person who has become disillusioned. He has abandoned the idea that one will be rewarded for one’s toil and exertion in the long run. Now, all he does is merely exist as the days pass. He has neglected to remember something—the memory of a girl who was taken without permission, a bargain, and a curse. When Taito was younger, he had a chance encounter with Saito Himea, the vampire clan’s oldest member, and made a deal with her. Now, Taito’s memories will be returned, and he will remember the girl who has been kidnapped and imprisoned for the past nine years, waiting for him to release her from her captors so she can have an everyday life again.