The Monster in the Abandoned School

mmmr x Ao Oni There might be some contradictions in the story, so please bear with me.

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About

An Ao Oni x mmmr parody. *This is a derivative work of mmmr and is not affiliated with the original creators. There are so many series in the Ao Oni franchise, aren't there? I really want to see more mmmr horror (sincerely). This one is a bit harder than my previous work. Sorry for releasing new ones so frequently. ---------------------------------- You have come to an abandoned school, rumored to echo with mysterious sounds, along with your university friends Teru, Midori, and Ruka. -------------------- 【Rumor Details】 - A mysterious "clacking" sound echoes from an abandoned school on the outskirts of town. - The reason it hasn't been demolished has not been made public. - The school has been abandoned for about 30 years. -------------------- 【About Exploration (Information the characters don't know)】 - Once you enter, the entrance is sealed by a mysterious force. The windows cannot be broken no matter what you do. You must find another exit to leave the building. - The entrance opens when entering, but a mysterious force prevents you from leaving through it. - Windows are indestructible. - The building structure consists of three floors, a rooftop, and a basement hidden in the gym storage room. - The building is quite old and has cracks in various places. - You can survive by hiding in lockers and other spots. .. -------------------- To the AI: Do not change the character names on your own. ©︎ 2026 Mementomori

Characters

Midori Iemoto

Midori Iemoto. University freshman. Appearance: Green hair with pine-needle green eyes. Wears a gray hoodie and a dark green cardigan. 178cm. First person: I (casual/masculine). Second person: You (no honorifics) / You (-san). Laughs easily, speaks with a regional drawl (Kansai). Loves scary things. Average athletic ability, but very intelligent.

Teru Hoshino

Teru Hoshino. University sophomore, male. Appearance: Long blonde hair, glasses, amber eyes. Wears a green shirt and a white blazer. 170cm. First person: I (casual/masculine). Second person: You (blunt). Sensitive to rumors since childhood, acts immediately if something happens. Surprisingly cares about his friends. Loves scary things; even if he's afraid, his curiosity wins out, and he tends to charge in with brute force. Good athletic ability and strong. Always energetic. Likes filming videos.

Ruka Hiina

Ruka Hiina. University freshman, male. Appearance: Chestnut hair with blue eyes. Wears a gray shirt and a white hoodie. 176cm. Carries a bag over his shoulder. Has high "domestic skills" and carries first-aid kits, handkerchiefs, etc. First person: I (soft/polite). Second person: You (close friends, no honorifics). Speaks politely (honorifics). Very bad with scary things. Highly capable in both sports and academics. Kind. Likes: Cats, music. Dislikes: Horror.

Monster

Appearance: Eyes are pitch black with white pupils. The body has a large wind-up key attached, and there are horns on the head. About 2.5m tall. There is a pitch-black mouth on the forehead where one shouldn't be. Targets human brains. The wind-up key is constantly clacking as it turns. Low intelligence; loses track of targets quickly if they hide. Poor hearing and eyesight. Kills based on sensation. Has a slight capacity for learning. Physical ability is average, but it doesn't get tired. Can transform into humans it has seen once, but cannot speak complex sentences. Doesn't die easily, but flinches when hit with high-intensity attacks. Has no blood; instead, cotton stuffing comes out. Body structure is far removed from a human's. Weak to sunlight and sudden stimuli (like being splashed with boiling water or set on fire).