Edzuke wa Yahan, Ano Heya de

Shinya owns a special shop named, Omoiro, that serves both humans and vampires known as "bats". There is a secret the shop owner has been holding for the past 10 years; it is to give blood to the man who has been his caretaker, Sunakawa Sanshirou, since the time he was a high school student. Since suddenly being attacked by a vampire while heading...