what episode in Tsuki ga Michibiku Isekai Douchuu 2nd Season did makoto show a mock fight with his apprentice for the students

The mock fight scene with Makoto and his apprentice for the students is in Episode 5 of Tsuki ga Michibiku Isekai Douchuu 2nd Season.

Quick Scoop

• The official clip title points to “Mock Battle” and explicitly says Episode 5.

• It also mentions Makoto wanting to impress his students, which matches the scene you described.

TL;DR: It’s Season 2, Episode 5.