Kimetsu Gakuen! Volume 4

 is the fourth volume of the Kimetsu Gakuen! spin-off series by Natsuki Hokami.

Chapters

 * 11. Grilled Salmon Mayo Cheese Bread (こんがりマヨチーズパン)
 * 12. Ubuyashiki Estate's Secret (産屋敷邸の秘密)
 * 13. Pajamas Panicking Party (パジャマ・パニック・パーティ)
 * 14. Civic Teacher's Nyanzu Challenge (公民教師のニャンズーチャレンジ)
 * 15. Get the Kimetsu Document!