
(Spoiler)
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Since Jiwoon doesn't want to involve his own secretary in this problem and he knows Suha wouldn't want to quit (or he didnt want to put him in this situation), so he didn't let Suha go to work. He's doing everything by himself. Also, the possible dangerous outcome wouldn't go to Suha too, since he wasn't even there.
Maybe I'm overthinking but it seems Jiwoon wants to lock Suha so that he doesn't get involved in this mess lol

Yeah I read the link to the huge spoiler which you provided and thank you for that. I think he's locking him up to protect him. Remember when the red head went straight to Suha to harm him? Jiwoon doesn't want for that to happen again knowing how fuck up red head is no one is going to protect Suha not even the Grandma.

You’re right and you’re welcome! I did put that there yes, not gonna justify Jiwoon’s actions ever but there can be redemption compared to the red head tampon who doesn’t deserve redemption honestly.
Yes Red head definitely wants to harm Suha and use him as a toy again like in their high school days. He also wants to mentally hurt Jiwoon knowing he has trauma. Jiwoon’s way of protecting isn’t good but hopefully they sort it out together!

aaaah right! lol I guess Jiwoon actions seem less crazy, he's under a lot of pressure.
AHhahHAH trueeeee, Suha is his beloved before his secretary...... actually, their dynamic is so different from boss/secretary, honestly, they're at the same level, even though Suha still calls him "sir"
udhfiudsnkfnds damn his d!! lol I cant believe we witnessed that

Yeah I'm agreeing with you on that and but I think Jiwoon's action is the best option for now specially considering how attach Suha is to the grandmother. I mean he owes her of his life and education which will put Suha on a tight spot if ever he knows what was really happening and what his lover is planning to do which is to expose all the dirty deeds in the company.
I hope they will be able to talk this out clearly.
"it wouldn't be strange if I turn up as a corpse first thing tomorrow morning" So the problem is that serious? So maybe he isn't locking Suha just because he's worried because of redhead but also bc he fears the ramifications of what he's doing?
Also, his dick UHFIDSFNKSDJF I wasn't seeing anything but everyone pointed out hahaha DAMN