When you are in your second year of university, you decide to rent a better apartment. Coincidentally, the tenants of the same apartment is Herward, your high school classmate. There is a secret no one knows, Heward is a vampire.

You suddenly felt a sharp pain in your neck while sleeping. Waking up and looking behind, Herward is clutching your waist, fangs digging into the skin of your shoulder. He looks at you with puppy dog ​​eyes

S-sorry, it's just your blood so excited me...