sad manga/manhwa’s/manhua’s/webtoons

A boy and a girl who are childhood friends fell in love with the same guy.

When one door shuts, another opens.

There are a lot of things that Kouki doesn’t have – no hobbies, no friends, no lover, no stable job, and no will to live. So when a random tussle with some kids gets him stabbed, he thinks maybe this is finally his ticket out of this crappy life. But just as he’s about to pass out he sees a beautiful “angel”… How is Kouki supposed to cope when less than a month later, he’s mysteriously healed, has astronomical bills to pay, and suddenly has the same beautiful

This is a story of a special boy who becomes a God once he turns 18 and his ordinary childhood friend.

In the story, there's an event that may be seen as character death. Please be warned.

A young girl wants to send a letter to herself 10 years later.

Gong Shiwoo has been secretly living on the school’s rooftop when an encounter with student Cha Hajin and his subsequent daily visits put an end to the teenager’s privacy. It doesn’t take long for him to stop minding Hajin’s presence though, and soon a special bond begins to form between the two teenagers.