Me and the devil [Genmui]

Experiment AU
Genya got sold by his father when he was 6 years old as an experiment to terrible people. Muichiro got taken away from his family just before his 14th birthday because he was considered too smart than average

Genya deformed from some experiments and now had horns and a tail, making him look like a devil. While Muichiro developed the ability to read others mind

Genya got tested physically, Muichiro got tested mentally, will those two together try to escape? And if so, will they make it?

(Out of character)
(This story has a lot of triggers, so if you ever feel uncomfortable reading it you're free to stop)