@Jaehyun
Spoiler!
Zhenya is actually psih bogdanov, taekju will eventually find out through a phone call from a colleague when him and zhenya were on a mission together. Zhenya interrupts his phone call cause he knew he was already found out he drugged taekju with an aphrodisiac and raped him. The guy who taekju thought was bogdanov, the one who drowned a couple of chapters ago was actually taekju's actual partner.
