My Class is Holy Princess?! (BL)

The summoning ceremony was successful, a Hero was invoked, a female magician... And a GUY who is the Holy Princess?! Hirai Keisuke is a guy that fights a lot. His friends, Ms.Good in Sports And Mrs.Perfect Student known him since they are kids, but when they are transported to another world, their adventure is just beginning. And Keisuke is for some reason the Holy Princess? Why does he have a class that is supposed to be for girls? And why this class says he is the Demon Lord's fiancee?! (This synopsis is temporary. Gosh, I'm sorry about how bad it is at the moment) This is a man/man story! If you don't like the genre I implore you don't read it and don't comment on how you don't like it. Or just read and tell how I can IMPROVE and not about how the story would be better if I didn't put Slash in it. I would try to make a really good start so, in the beginning, the love interest will not even appear. It is an Isekai novel at the same time it is a BL novel. I love isekais and think it is a pity the quantity of isekais BL, and it is because of it I created this novel. And NO, I couldn't write it with the MC being a girl. I have stories with MC that are girls and fall in love with boys, and stories in with they fall in love in love with girls. And have stories with MC that are boys, but normally it is BL. It is simply as I do things. And I put the genre of the character according to what the story tells me.