This is just my analysis, remember when hatano says the last time they meet 8 years ago, if hatano rn 17 thats means back then he's 9-10. Some jp fans implied mc meet hatano when he's still middle school because back then he's still doesn't know about bl stuff (read chapter 1 when mc realize he's living in bl world when he's already in high school) so they age gap probably 3-4 years. I say 3-4 years because in chapter 72 the story about hatano birthday so that makes implied hatano already 18 years old. but is just wild theory (also sorry about bad english)╮( ̄▽ ̄)╭

just watch the final drama!!! wowww our mob ended up with hatano!!! wowww!!
the question is who is the bottom and the top??? ಡ ʖ ಡ