He's Coming To Me S01 E01 Episode 1

Met, a young man who died of heart failure on his 22nd birthday, becomes a ghost, unable to move on. With no family visiting his grave, he lives in solitude in the cemetery. One year during the Qingming Festival, a boy named Than visits the grave next to Met’s. Realizing Than can see ghosts, Met begins to look forward to his annual visits. But after Than’s father dies, he stops coming. Met is disheartened, but years later, Than—now a college student—reappears.