Responses
Nanoka no Kare
http://www.mangago.zone/read-manga/kyou_wa_hayaku_kaerou/
Donno how old the older guy is tho ╮(￣▽￣)╭
http://www.mangago.zone/read-manga/dear_gentle_papa/
The side couple. Tho the younger one is in elementary school in the beginning of the story...(⊙…⊙ )
http://www.mangago.zone/read-manga/bokura_no_negai/
Kento and Take I think have that age gap?
Just realised it's pretty rare,do you know any ?