Being "worried" is not an excuse for tracking your partner without their knowledge. It is also not an excuse for locking up your partner and never allowing them to see any of their friends or family. Thankfully, sunbae appears to do better in future chapters.
If I was sunbae I would have put a tracker on him too, to be honest hosik is pretty stupid and follows his friends too much, he's a month away from having a baby if my husband didn't care as much about me like sunbae I would have said he didn't care and I'm sure hosik would say the something
I would be fine with it if he actually TOLD Hosik he was worried and wanted to put a GPS tracker on his phone and then after Hosik AGREED, sunbae could put that tracker on. Consent yo. That's what this is about. Sunbae is doing all of these things without Hosik's consent. As it stands right now, this is an unbalanced and potentially toxic relationship. Sunbae holds all the authority and disregards Hosik's opinions. This is not healthy for either of them.
How do you people call how sunbae is acting creepy, he's worried about his pregnant wife, like what the fuck, non of you know sunbaes story and why he's doing this, he must have a reason for worrying so much; lay of the man （￣へ￣）