Ep. 74: Onsen-Mark narrates a tale of a cursed willow tree that Ataru damages with a carved symbol.

Onsen-Mark shares a story about a cursed willow tree with the class. Ataru carves his company's symbol into the bark with a knife, which releases an old man from the wood. This entity leaves behind a map suggesting the location of hidden treasure. Meanwhile, Mendou intends to confront the old man at midnight to address the mockery of his company logo that Ataru previously carved onto the back of his robe. While these events unfold, Onsen-Mark is compelled to perform guard duty alone across the school during the night.

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