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 person by the end of the week. Fellow student Yuzuru has broken many girls' hearts and...

When looking for alternative energy sources, the Japanese scientist Sekai tragically dies. Twenty years later the Brazilian mathematician Euclides continues his research. The lack of an essential component won't allow a breakthrou...