The MC is a wandless because he does not have a physicaly visable wand and is believed to be powerless and useless, but the fact that he has become his wand allows him to be much much stronger.

Reincarnated as a mob charecter in an otome game he was forced to play by his sister, uses knoledge of the game to become strong, his main aim is to lead a relaxing life.

MC starts of as a weak and timid human in the series in a school of monsters and has to hide the fact he is human but due to various events people thing he is actually really strong however as time passes and events unfold the MC becomes extremely overpowered as he slowly undergoes changes with his body.

The MC accidentally gets stronger when someone tries to kill him and then he just keeps getting stronger and stronger whilst having massive impacts upon the universe.