Sometimes people need at least a day to cool down their thoughts and think about the situation. Hosik is somewhat in the wrong for saying those empty threats, but that doesn't mean that sunbae can just break the door down when he won't come out. Here's the thing, instead of sunbae saying no because he thinks Hosik can't handle it, why not try and work through it instead of immediately shutting it down? They could hire a nanny during the day, when Hosik is studying they can take shifts with the baby. Parenting isn't easy in the first place, why have it be restrictive as well? There's always a solution that can be used if they both put in equal efforts.

A probably pan girl that has 0.1% dating xp , so might even be cupioromantic? (I don't care anymore)
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LOVE YA! YOU'RE BEAUTIFUL AND DON'T LET ANYONE TELL YOU OTHERWISE!
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LOVE YA! YOU'RE BEAUTIFUL AND DON'T LET ANYONE TELL YOU OTHERWISE!
Spoiler!
PLEASE ASK FOR RECS!

(This was rlly long, my bad!)