Insta Family

Song Jaesun knew what he was getting into, when he married Jok OnMi and became her child's legal guardian. He knew the challenges he'd face, raising a trans pre-teen alone, after his wife's death. He's known all this well in advance, and believes himself ready, eager, even, for it provides him with the one thing he's longed for but is beyond his reach: his own family. He believes himself man enough to stand up to the hurdles and face every trial.
What he didn't count on, though - and sure wasn't ready for - is the father of his late wife's child.
Now that Kai HaoTian's decided to make up for all his past mistakes and work hard on regaining his kid's affection, the two men find themselves forced to share living arrangements for the sake of a child both love immensely.
And it's not gonna be easy, when all they feel for each other is resentment...