BlackBerserker

Twin Dragon's of the Morning Star Little Vali, without Azazel's knowledge, accidentally summons Melusine, and later they become brother and sister to each other. I read it a long time ago, I don't remember exactly.

A promising start, it's rare to find good date a live fanfics, and meeting Melusine is even more difficult (from the latest I remember a fanfic where she was summoned as a servant of Vally from dxd).

Date A Live: Starting as Acheron - this is the only thing that comes to mind, although maybe a fic where Kurumi saves worlds lol

Can you please tell me the name of the original? I can't find it.

Is this a translation or an original work?

promising start The Elden ring is not here yet

?

Imba

Life?