Daisuke Niwa

Daisuke Niwa is on his 14th birthday when he decides to reveal his feelings to his young crush Risa Harada. He finds out that she finds him like a "good friend" before he manages to give her the envelope containing his confession. This realisation triggers a chemical reaction within his body transforming him into Dark Mousy. His mother, Emiko Niwa, reassures him that it is a hereditary condition passed down through the male descendants of the Niwa family. To return to normality Daisuke has to have his love returned to him.