Umm... sorry, i saw one like it before, but i forget it's name...
But here is (Abe Miyuki)'s works, hope you will like it ><
http://www.mangago.zone/r/l_search/?name=abe%20miyuki
I think it might be either this one - http://www.mangago.zone/read-manga/kimi_wa_boku_wo_suki_ni_naru/
OR this one - http://www.mangago.zone/read-manga/first_love_miyuki_abe/
Only when I these 2 works of Abe Miyuki, I though that they are quite similar to Komatta in some ways. May be if you could mention the "events" that made you think they are similar, it would be easier to find them.
i read Komatta Toki Ni Wa Hoshi Ni Kike! .. actually this is my 2nd time reading it..the first time was so long ago.. but i remember some events that didnt happen while i was reading it now,, so im guessing i confused it with another manga?? can anyone tell me if theres a story that resembles this one?? please give me some clus?? im really bothered by it.. thanks,,