Hiyori Yuki

Toji is a popular high school boy who is easy to get, but difficult to keep. He will date anyone who asks him on a Monday, but is done with the ...

Takumi and Gii are now a couple, but Takumi is still uncomfortable with showing affection. Not only that, but Takumi grows jealous when Gii ...

When looking for alternative energy sources, the Japanese scientist Sekai tragically dies. Twenty years later the Brazilian mathematician ...