Ranmaru is a 450-year-old vampire who works in a bathhouse. As a vampire he is particularly picky about his blood choices, his main goal being to drink the blood of an 18-year-old virgin. To do so, he has been watching 15-year-old Rihito, the son of the bathhouse owner who saved him from near death. Rihito must not lose his virginity before he turns 18 and Ranmaru does everything he can to prevent that. However, when Rihito starts to show interest in a classmate, Ranmaru's desperate fight to preserve the boys virginity begins.
吉沢亮
as Mori Ranmaru
板垣李光人
as Tatsuno Rihito
原菜乃華
as Shinozuka Aoi
眞栄田郷敦
as Mori Nagayoshi
満島真之介
as Sakamoto Umetaro
関口メンディー
as Shinozuka Ken
堤真一
as Oda Nobunaga
音尾琢真
as Tatsuno Haruhiko
映美くらら
as Tatsuno Tamao
笹野高史
as Tatsuno Chojiro
