Age gap?

incidentally living together, i think that's the name) has an 8 year age gap and is pretty good (although the last 15 chapters made me cry lol)

Hate Mate has like a 7 year gap
http://www.mangago.me/read-manga/hate_mate/

Day Off and Fools are both like 4-5 years
http://www.mangago.me/read-manga/day_off/
http://www.mangago.me/read-manga/fools/

http://www.mangago.me/readmanga/mujaki_na_wanko_to_nekokaburi/
This one and its spin off are both pretty wide gaps I think

17 year ag gap:
http://www.mangago.me/read-manga/kikasete_yo_ai_no_kotoba_o/

Like 6-7-8 age gap??:

http://www.mangago.me/read-manga/in_my_closet/

Lover boy!!

The first one is a literal cradle robber. What'd you have in common with someone who's 17 yrs older than you fr.