Hyoudou Twins Angel/Devil/Dragons (highschool dxd x male reader)

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.