I think their are multiple couples I don't know but I know that they are neighbors who everyone thought was going out but never really soad they were and the parents talk in the extra about marriage of aons
the only one i can think is http://www.mangago.me/read-manga/samishigariya_no_love_letter/bt/342599/Vol1_Ch3/
Thanks
I think their are multiple couples I don't know but I know that they are neighbors who everyone thought was going out but never really soad they were and the parents talk in the extra about marriage of aons