I read it a while ago and i forgot the name 🙁 ;it is about two boys who meet every day on the street while going to school and they play a game like, walking on the street lineor something like that.they grow apart but they will see each other after many years and get together.the story is very sad at the end cause they get old and die but they meet in heaven continuing their game .

Life senjou no bokura??

Omg thank you so much!!! 🙂 ) i've been looking for the name the whole day...i really apreciate it