Responses
Never mind it found it. But for those of you who might be interested, here are the links:
http://www.mangago.me/read-manga/koinu_datte_otona_ni_naru/
http://www.mangago.me/read-manga/koinu_wa_otona_no_yume_o_miru/
They are connected with each other. It's about childhood friends/ neighbours. The older one goes to university, the younger one goes to high school. One of them had a dog but it died. The younger one brings the older ones meals over or cooks for him. They get together at the end of the first story but the younger one is kinda distant.