[spoiler] I finished vol.5 few minutes ago, and all I can say is: just wait ;)
Everything happens very organically and it's very THEM.
Taek Joo's relationship with Zhenya was unusual from the start (that's an understatement), and since it's Zhenya we are talking about here, I never expected some grand romance between them, especially after what he did to Taek Joo. Plus, Teak Joo himself is rather closed-off and not overly emotional person. But they make it work somehow, in their own special way. I was actually surprised many times how sweet they can be together.
Anyway, now that I finished the novels, I'm feeling very bittersweet. I'm going to miss them and I can't wait for the manhwa to cover vol.3-5. Tbh, vol.4 may be my favorite over all, though I wonder if I'd feel the same with good translation. PS. Did your fan translation is also... quite unfortunate, or did you get lucky? [/spoiler]
I'm glad that someone else is enjoying this story. It really got to me for some reason, i.e I've become obsessed/passionate about it enough to read the novels, which almost never happens. I hope to see you here again after you finish the 5th book, and maybe share you thoughts? For me, Taek Joo and Zhenya's story was a journey and a half! The translation I got (from reddit, I think - it was a while ago) has a lot of okay parts, but a lot of the dialogues don't make much sense; also pov switches constantly and gendered words like his/hers and him/her get confused xD. Still, it was a fun ride nontheless and I'm definitely gonna re-read.
I'm currently reading a fan translation of the novel and I'm up to vol.4. I'll be honest, I don't know how the author is going to tie their romance together. There are a few flutter moments but overall it's very hard realism in the romance department.
Nonetheless, can't wait for the future chapters!