Responses
This one also has a time limit sorta thing
http://www.mangago.me/read-manga/me_niwa_sayakani_mienedomo/mf/v01/c001/
This one has a ghost too
http://www.mangago.me/read-manga/gekkou_no_rankan_ni_kuchinashi_no_nioi/mf/v01/c007/
About a boy that falls in love with his classmate whom he barely talks to. He died in a car accident(?)I don't know but he died . He was given 30 days(?) to confess his love to the boy before his soul(?) disappear. Not sure if it's a novel or a manhua. Anybody?