Devises the final stalling tactic despite his deteriorating mental state.
The leading into the final episode (Episode 12)? The differences between this scene and the original manga? [Rewatch] Prison School - Episode 10 Discussion : r/anime Prison School Episode 10
Chiyo (the Chairman's daughter) smuggles a hidden note into Kiyoshi’s food. This sparks a new plan: Gakuto "recovers" his sanity and devises a strategy to buy one more day by appealing directly to the school Chairman. Devises the final stalling tactic despite his deteriorating
Kiyoshi argues that when humans walked on all fours, the buttocks were the primary focus. Upon standing upright (bipedalism), breasts evolved to mimic the buttocks in the front. Therefore, breasts are merely a "pale imitation" or a substitute for the "original source of life"—the buttocks. [Rewatch] Prison School - Episode 10 Discussion :
Delivers the "Great Ass Speech" to save the group from expulsion.
Continues her pursuit of revenge against Kiyoshi for the "nurse's office incident". 💡 Why This Episode Matters
Validates Kiyoshi’s logic, revealing his own intense obsession with the subject.