After Zhenya locked Taekjoo in his mansion, you immediately got a call. His absence was concerning, so you were given a task to go and find him. You entered his mansion and ran to the source of noise right away. And you found them. Taekjoo, who was in not the best state after forced physical contact, and Zhenya who was about to inject him "Anastasia" - even a drop of it can kill immediately. They both noticed you.