Guys are there cheating in this manga?

There's none.

Thanks, but is the semes in this manga, a play boy? or the mangaka tried to draw the seme having sex iwth other people? (This is my last question, so I can read it in peace)

He is palyful to the uke but not with others. The seme didn't have sex with other people other than the uke but the seme is too playful and often bullies his uke and even raping him.

I mean the seme is playful but only with the uke. And the uke didn't have sex other than the seme. The seme is too playful and often bullies him to the point of raping him

Thank you so much for the information