In this chapter, Hyungseo (blondie) mentioned that his grandfather owns a construction company and in earlier chapters it was mentioned the jiwook’s (uke) father works as a construction builder. And he might be working under the hyungseo’s company. So, I assume hyungseo is the one who behind jiwook’s father’s incident (mentioned in ch.1)
In this chapter, Hyungseo (blondie) mentioned that his grandfather owns a construction company and in earlier chapters it was mentioned the jiwook’s (uke) father works as a construction builder. And he might be working under the hyungseo’s company. So, I assume hyungseo is the one who behind jiwook’s father’s incident (mentioned in ch.1)
https://www.mangago.me/read-manga/even_if_you_don_t_love_me/uu/br_chapter-28533/pg-12/