Erinnerung (エリンネルグ, Erinnerugu) is a Horror that inhabits a tree which Osamu Shōnai and his wife Naoe grew from a seed that they found among the belongings of their son Masato, a wartime photographer who was killed in action. The two proceed to invite people who pass by into their house for a meal. They then poison their guests and bury them under the tree which casts an illusion of "Masato" under the moonlight which acts on the couple's stronger memory of him. Rei is invited for dinner and later poisoned as well. However, immune to poison, Rei confronts Erinnerung as it personally attacks him and kills the Horror with the couple heartbroken. Erinnerung is voiced by Yukari Okuda (奥田 ゆかり, Okuda Yukari?).

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