The Dark King of Union (Male reader X Union Academy)

(spin off and sequel to the Isekai Quartet book) (Y/n) "Zero" (L/n) was deemed as the weakest student in Union Academy, even though he was weak he was smarter than everyone but Everyone Bullies him except for his friends and the teachers but what happens if he comes back to the world he left, Will things change? Will...

===The One who surpasses Heaven===[Male Yokai OC X Highschool DxD X Harem]

A young man loses his mother with his brother leaving home,decides to do something his ancestor had done long ago.But not only that,but to do something not even he was able to do,and begin his own journey.