Responses
http://www.mangago.zone/read-manga/life_senjou_no_bokura/
sounds like this one. there's not "line" in the title though.
That manga made me cry so much （/TДT)/
I am looking for a manga (BL) where the two main protagonists met on a street line (the two students). Time passed and they kept meeting in the same street line. At the end of the manga, they became old together. And if i remember correctly one of them dies. The title was something like line