Katori Sachikazu

The main protagonist. He has known cooking skills.

After a fateful encounter with the mysterious Manjuu-sama, the girls he knows have started to become aroused around him. His semen is the only way of countering Manjuu-sama's effect.

 His first love is revealed to be Hozumi Kusaka. He was in love with her since young. Manjuu sama told him that something precious will be returned to him. The precious thing that returned to him was his first love and memories of it.