Dark fantasy isekai. Op ML, FL (adult form) and enemy. Ok plot so far. Not revenge isekai so far but might become one?
Warning. Non human genocide. Crude art. (LN tagged polygamy, harem, mature but manga still ecchi “only” for now).
Summoned as an experiment. MC was forced fighting using his black magic. Ran away and met a cute half-fairy child banned since birth from fairies. They became family in a multi-racial village, but war aren’t far and happiness can be short...
Kuro no Maou