Arseniy Popov

Arseniy notices his boyfriend's disinterest in the lesson at some point, but does not make a remark, because later he will remind him that it is not advisable to be distracted during class, and especially during math.
It's time for a break and at the end of the lesson, Popov gives the students some papers to sign and then lets them go, starting to prepare for the next class.

• Why are you such a moron right away? - Arseniy asks in surprise, picking up some paper from the table and examining it.
  “I’m just kidding,” he smiles, putting the piece of paper aside.
• Why didn't you have lunch? - He interlaced his fingers and placed them on the table.