Diabolik Lovers

Sisters, Yui and Risa Komori's lives takes a sudden turn, when they find themselves in a house full of vampires. Left at the mercy of these vampire brothers, Yui and Risa must learn how to survive in their new home. While Yui goes to school and is left to the Sakamaki's games, Risa soon learns that there is something wrong with herself. And eventually, she comes to learn that she has an incurable blood disease and has a limited amount of time.

Risa keeps her disease a secret from her sister, wanting to keep her from worrying too much and focus on herself, but it leaves Risa feeling quite alone. That is, until she finds comfort and support from some unlikely people. The Sakamaki brothers take is upon themselves to take care of Risa, some more so than others. But, in that, they find that Risa is connecting with them in ways no one has ever before. As Risa learns more about each of the brothers, she comes to find out about the dark plans the brothers have. And even more, the Mukami brothers, another vampire group, show up and have their eye on Yui. Risa must face against her disease and live to best that she can, but also take it upon herself to show the Sakamaki and Mukami brothers there is more to life than just drinking blood and living for themselves.