Finally a harem made somewhat unintentionaly or intentionaly without having a mc who thinks with his fucking **** sooooooooooo fucking good dude keep it going and thank god issei and some other characters turned into girls idk why but these kinda stories where the orginal mc gets cucked makes me cringe on the thought *shivers*
Personally, I am a fan of Allen Walker, so I love how author has introduced him in his novel. And amazing thing is that he removed dense element from his personality (You must know that creator of Character: Allen is a female mangaka which specialize in emotions rather than fighting and heck, even the people following him are mostly males). I have given writing a 4 star, reason being there is a huge gap in english quality which can be filled, so Author make mistakes as much you require and don't hold back. We are waiting for the moment when your writing skill reaches a good level in your second language too.