being the strongest is kinda boring [Op!male reader x Union DXD]

Meet Y/n L/n, the head of L/n family. he's strong, that's all we know. Let's see his adventure of randomness of this world together

[Wanna know why I make this union dxd and not highschool dxd? Because I don't remember anything from the anime or even manga. So, everything in the book is all my pure imagination and fantasy]