It's just refreshing, they play off each other well. Sure he is dense, but it works with his character. Plus, he isn't some generic beta male protagonist. Honestly, it's just feels fresh to me.
So this is essentially what would happen if Excel(not the office kind) started going out with a gender swapped version of herself. Ridiculous level of energy and chaos ensures.
Jesus christ, they already have the confession out of the way AND theres a realistic grasp on the need to actually know someone before a serious relationship. I mean both characters are sexy idiots, that is what makes it pretty funny, but this story has a really solid foundation and its less than 10 chapters in.