I think that in your series Gemini to two companions (one who is his best friend since his childhood and a girl with whom he could be in a couple the best would be to leave the doubt for the spectators) and that his perverse side often mishandles them. It would also take a bad guy who would try to bring his evil side to govern together. You should also make Gemini very often have nightmares on his side. I think we should give him a name to his perverse side (suggest in the comments).