Brain dump after watching Classroom of the Elite Season 4 Episode 8

I am a light novel reader for this series and this note includes a spoiler.

I watched the Classroom of the Elite, COTE, season 4, episode 8. This episode is all for preprations for the next exam. Actually, I noticed there are a lot of characters point of views in one episode, but it's kinda natural as the next exam is going to be long.

I completely forgot, that Katsuragi met Ryuen and joined with his class in this episode. I thought it was when Yahiko got expelled on the end of 1st year.

And I also forgot Nanase was working for Tsukishiro to expel him before the exam.

What was a good scene was when Ayanokoji tried to dilute coffee. Even Ryuen had no word to say to him.