Writer Hasegawa Mitsuru has been investigating a case that was rumored to be the work of vampires known as “Biters”. His childhood friend, Annaka Yuusei, a.k.a. Anna, warns him not to stick his head into...

The continuation of the story of the writer, Mitsuru Hasegawa and real estate business owner, Yuusei Annaka (also known as Anna). There are secrets between these 2 childhood friends, who are also lovers.