"The room where we held the Four Corners Game should be the place where Hinakabe Haru's body was found— which is here at Ochasaki Middle School. This is why Mr. Temple and I came here to investigate, and it also explains why just a few of us got entangled by the opponent."
Hinakabe Haru, transformed into a tired woman, was quietly buried underground in cement.
Her power had not yet intensified.
At that time, Shen Gu Mirai and others found the room where Hinakabe Haru's remains were buried and conducted the then-popular Four Corners Spirit Game.
This allowed Hinakabe Haru to successfully kill the first person, Akisai Ikki.
After that, it lay dormant again until today. With her power accumulated, Hinakabe Haru began to frequently target the people who had conducted the Four Corners Spirit Game.
This was Shen Gu Mirai's guess.
"Not bad." Beichuan Si finally spoke.
