East Kawaki Middle (東河木中学校 Higashi Kawaki Gakuen Chūtōbu , lit. Higashikagi Middle School/ Higashikagi Junior High School) is a junior high school from which you can collect name tags in Corpse Party: Blood Drive.
- Mika Orie is the illustrator of Corpseparty; Musume and Corpse Party: Book of Shadows manga.
- Sumito Ogiwara's spirit appears in Chapter 2 after Haruyuki Inumaru falls ill to the darkening. He tells Aiko to use the statue in his corpse to save him, showing off the mechanic of darkening in Corpse Party: Blood Drive.
- By extension, the descriptions of name tags show us that the friend he was trying to save is his fellow teacher Yuji Sanuki.