Lee-Jin Wook seems like a perfect candidate for being turned. Main character should definitely use him against his idiot villain of a brother. Also, I'm pissed that douchebag is still living. But whatever. I have faith that he'll get his.
I don't know if it's a translation thing, but when the Book-isekai character fails to recognize characters from a book and say they were surprised at finding out . . . .
"The real person is visually different from what I imagined from reading." 🤔
I think QC also accidentally missed the name continuity in this chapter. He was referred to as Yi Jinwook in one panel, but the others were all Lee Jin-Wook. Lee and Yi sound similar anyway I guess