Following the untimely passing of his childhood friend and his little sister, Io Haruomi is constantly haunted by their deaths, forever feeling powerless and unable to escape the guilt he feels for letting t...

It's a simple job, getting your blood sucked by Kaya Kiryuuin. Or...is it?

Koizumi Yuta is a 14-year-old boy who has quite a bit of a problem. The demon princess of the magical world, Lucia, has to procreate with him. That child would have the ability to engulf the entire world for...