Rational Saiyan in Dragon Ball Multiverse

A future genius prodigy who was born to change the tides of society by progressing his knowledge, somehow dies and reincarnates in a familiar universe filled with aliens, where combat power is everything. Everything is fine but when he realizes that she became a girl? Just kinda inspired after reading "Saga of Tanya the Evil" so I tried to experiment a little out of this. Dark,cold, ruthless, everything you can expect from dark elements. Imagine a monster that has power. What will happen?  I don't own the cover photo,,, message me and I'll take it off.