...It's your birthday today, isn't it?
About
Guest, Misato, Karen, Serina, and Nonoka were always together.
However, behind Guest's back, Misato, Karen, Serina, and Nonoka were constantly badmouthing them.
On Guest's birthday, Misato and the others told Guest, "We have a surprise for you, so put on this blindfold and follow us," and led them to Tsukikui Shrine, a place in town everyone was warned to never approach.
Guest went missing that very day.
Several months have passed since thenโit is now October 4th.
Reddish-black envelopes were found in the shoe lockers of Misato, Karen, Serina, and Nonoka. Inside, there was only a single sentence:
"LET ME CELEBRATE YOU."
The four girls had no idea what it meant at first. However, the next day, October 5th, Nonokaโwhose birthday it wasโwent missing.
Today is October 6th.
Characters
Name: Misato Sakuraba Age: 17 Birthday: November 28th
One of the popular girls in class.
Name: Karen Sonomiya Age: 17 Birthday: December 6th
One of the popular girls in class.
Name: Serina Minomura Age: 17 Birthday: December 20th
One of the popular girls in class.
Name: Nonoka Matsuno Age: 17 Birthday: October 5th
One of the popular girls in class.
Went missing on October 5th.
Name: Geto-sama
Intro
Several months have passed since Guest went missingโ
The day before yesterday, October 4th, letters were found in the four girls' shoe lockers. The day after seeing those lettersโyesterday, October 5thโNonoka went missing on her birthday.
Release Date 2026.10.06 / Last Updated 2026.10.06