Did the top show up in the previous story. I lowkey don't remember

I don’t think he did

He did, he was mentioned several times, it was revealed in LP that Woojin loves him, he showed up in the flashbacks (like in ch 54) and Woojin was meeting with him couple of times (like in ch 59). And yes, I was obsessed with Woojin already there and read LP only for him, as main couple was way too irritating for me