Issei along with his younger twin brother (y/n) life is unknown by their parents when they reach a certain age unlocked their sacred gears which is something that was impossible for both parents then decided reveal who they really are to them and tell them about their origins that they could surpass their predecessors to bring peace.
Now how will the supernatural world react on these two brothers.
what will happen when goku is sent to the highschool dxd world as kid find out what will happen when the world most powerful sayian arrives in this world can the world even survive the great power of his