The new me is Ayato Sakamaki

I was just a normal highschool boy. My elder sister was a die hard otaku and she forced me to watch her favorite anime with her : diabolik lovers. But she did not stop and kept bothering me, she would change my bed sheets to those with DL characters faces, put their posters in my room and the most annoying one... SHE CHANGED MY WHOLE CLOSET INTO COSPLAYS!!
I was fed up with her so I wanted to play a small "prank" on her. I spilled water on the TV while she was watching diabolik lovers for the 9999999999+th time already.
That was a bad idea. I got electrocuted.
But... I was reborn as her favorite character instead. God, is this karma!?