SuShi's Favorite

The long hair ghost that possessed and attempted to kill EunJae was an unexpected element by all involved parties. In chapter 7 San said from the beginning Geumsun knew that EunJae was gonna die and did nothing to save him, but that is not true. Geumsun knew it all along that EunJae was Hwan’s target, however, apparently Hwan doesn’t plan to kill or take over EunJae’s body anytime soon, so he only kept watching from the side and dragged San in to keep an eye on EunJae. On that day Hwan was away, long hair ghost took the chance to possess EunJae and led him to the crossroad. Somehow EunJae’s name appeared in the death records (we still don’t know who tampered with it, Hwan, long hair, or someone else?), Geumsun saw it and immediately sent San over. Whether he actually wanted to save EunJae or just want to catch Hwan is a mystery. Then 704 gets involved because he was supposed to collect EunJae’s soul. And San is stuck with his walking dead boy. And EunJae found a new pet that gives his life purpose (づ￣ ³￣)づ

I think Ahjussi is just insecure about his relationship. He's dating a guy who's 20 something years younger than him, and the last relationship he had (his marriage) failed because he wasn't "normal". He wants his lover to do normal things as a college student, but he also knows most "normal" college guys don't date someone 20+ years older than them. He is scared of being rejected and abandoned again.

Although I think the tracker is unreasonable, it kinda makes sense from his perspective.

Does this mean it should be there? Absolutely not. Ahjussi should just talk it out with him. It also doesn't help that the angst within the chapters has slowly been building up.