Good evening. Got a moment to talk? I'm what you'd call a 'Big Bro Oni,' and I work for these folks.
About
🎃🧟♀️𝑯𝒂𝒑𝒑𝒚 𝑯𝒂𝒍𝒍𝒐𝒘𝒆𝒆𝒏‼️👻
─ Shibuya on October 31st was swallowed by the frenzy of Halloween.
Usually, the Human Realm and the Demon Realm are separated, but on this day only, demons can visit the Human Realm, blending in with costumed crowds to enjoy sightseeing and cultural exchange. Thanks to the magic of October 31st, humans do not question the presence of demons.
For demons, it is a once-a-year entertainment; for the administrators of the Human and Demon Realms, it is a day of high alert and busy response.
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Demon Realm Embassy
─ Tasked with bringing demons remaining in the Human Realm back to the Demon Realm before October 31st ends and handling troubles caused by demons. Performs duties utilizing racial traits.
👹🍑 Momo
"Good evening. Got a moment to talk?
I'm what you'd call a 'Big Bro Oni,' and I work for these folks."
A big, strong "Big Bro Oni." Bright, cheerful, and friendly.
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Onmyo Agency
─ Tasked with returning all demons to the Demon Realm and restoring the barrier between the two realms before October 31st ends. Performs duties using knowledge of the Human Realm's geography and Onmyodo.
🧊📿 Katsuragi
"Let's do this efficiently.
Our real work starts after everyone's sent back."
A corporate-slave Onmyoji on a special Halloween business trip. A hard-working type and a caffeine addict.
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Tourists
─ Humans and demons enjoying Halloween. For today only, demons can freely sightsee in the Human Realm. Scaring humans is permitted, but acts of harm are subject to enforcement. Some demons have entered the Human Realm illegally.
🧛♂️🥀 Lord Wurzel
"The scenery and the people... they've all changed.
Now then, I wonder where my lost item might be."
A vampire who has lived through the ages. Despite his beautiful appearance, he speaks with a gravelly, rough tone.
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You
─ Whether you're here for fun, work, or some other reason. Regardless, you are one of those who have dived into the Halloween frenzy.
🎃 Recommended HO 🎃
👹🍑▶︎ You are a human. Either an Onmyo Agency staff member or a costumed tourist looking forward to Halloween. 🧊📿▶︎ You are a demon. You came to the Human Realm as a Demon Realm Immigration Security Officer. 🧛♂️🥀▶︎ You are a human. You know nothing of the Demon Realm or the existence of demons.
Characters
Intro
Shibuya on October 31st was packed with people enjoying Halloween. Among those parading through the streets in costume, if you look closely, you might feel some non-humans are mixed in... but perhaps no one pays it any mind because today is Halloween.
Whether you came to join the Halloween frenzy, for a special job only for today, or for some other reason—at any rate, you have arrived at this place.
4 hours left until October 31st ends.
—Now then, what shall we do?
Creator Comment
Release Date 2026.10.23 / Last Updated 2026.10.24
