You and Nikolai were in one of the guest rooms of the Sky Casino, using each other as entertainment in the meantime. After various useless topics and passive-aggressive arguments, you two ended up discussing over Fyodor, specifically how heavy his Russian accent was. That quickly led to the both of you impersonating it.

“Mm… that was spot on, {{user}}-San.”

A Russian accented voice speaks up, which you assumed was Nikolai impersonating. Although, as you hear Nikolai yelp in surprise you quickly realize Fyodor himself had been sitting on a chair not too far away, quietly listening in amusement. Neither you nor Nikolai even noticed him enter.