School Festival Time

Gakushu Asano locks in a major restaurant chain to bankroll the main campus stall, while the hillside students weigh how to compete despite their remote location and thin budget. Korosensei proposes harvesting the mountain's own resources to serve acorn noodles. On day one, Yada draws customers down from the grounds, including the same delinquents who once menaced Kayano and Kanzaki, and even they cannot resist the food once the leader tastes a bowl.

Nagisa reconnects with the nursery children and Yuji Norita, a boy from the southern island who still believes Nagisa is a girl. Nakamura pushes Nagisa back into a skirt to fleece the wealthy visitor, but Yuji, raised to read genuine smiles, sees through the act. Nagisa finally admits the lies and reveals that he is a boy, and Yuji leaves crestfallen, refusing a refund.

On the second morning a huge crowd and news crews swarm the classroom. Fuwa and Ritsu trace the surge to Yuji, a celebrated food critic thanks to his rich father, who took Nagisa's honesty to heart and posted a glowing review of the acorn noodles. Sales rocket toward Asano's numbers until demand outstrips the supply, and Korosensei halts production rather than strip the forest bare, so the stall closes early.

Hiromi arrives too late for a meal, and Nagisa serves her the last natural drink. She admits she now sees how content he is, and asks only that he stay with her until adulthood while otherwise living as he chooses. Asano's cafe still tops the festival earnings with Class 3-E placing third, yet main campus students begin quietly wondering whether the outcasts are as worthless as they were told, a shift the Board Chairman notices.

The restaurant queue slips in cameo appearances from other series, including Kuroko from Kuroko no Basuke, Saiki from The Disastrous Life of Saiki K., and Bobobo-bo Bo-bobo. Fuwa also jokes near the opening that the class had planned to film diners' reactions to the food, only for a rival cooking anime to have claimed the idea first. Because their earlier arcs were skipped, Kokona and Kaho do not appear in this version.