Why is this marked YAOI???? There's not even the slightest hint of it. Both are very straight. Not even BL or anything romantic. But the story and art is still really good.
Edit: Okay it turns to yaoi at chapter 69. And it's... well.... pretty wild. 2 straight men just doing it. I feel for the uke. This is not for kids.
Love History Caused by Willful Negligence