Sex, I think
homosexuals too, im fairly sure
I'M CRYING
I think that ten years before the ml meets mc, he feels bad for him and takes care of him, giving him food, buying him books which is mc favorite and laughing at his words, he even saved mc from that incident, which gave yuta hope, until he suddenly disappeared to Korea with jaeil who's his boss. He used to like jaeil since jaeil took him when he was in the streets and gave him a job, food to eat and rest if you read pearl boy.
At jaeil his boss wedding, he gave his speech and left immediately, yuta felt angry that all these 10 years, the ml didn't came back or talked to him, he wanted to have a revenge on the ml, but it was impossible since he also loved him and hated him at the same time, so yuta wants to have revenge on ml for betraying and leaving him.
Because of the bullet in yuta brain, which made ml realise and being gentle around mc since he has 6 months to live unless he gets the surgery.
(Dunno if I am right but I guess it is like this
whar is this story even about