You-Zitsu: Other School Days

Yōkoso Jitsuryoku Shijō Shugi no Kyōshitsu e: Other School Days (ようこそ実力至上主義の教室へ OTHER SCHOOL DAYS) is an official spin-off manga of You-Zitsu series, which was published by  on September 23, 2017.

It covers new different story at the Advanced Nurturing High School.

Contents
The contents of this book consist of detailed character profiles, concept arts, illustrations, mono illustrations and short stories manga by various artists.

Cover Illustration
By Mataro

Character Profiles & Illustrations
In order of listing:
 * 1) Suzune Horikita (p. 2) — Illustration by Yuyu Ichino (p. 4)
 * 2) Kikyō Kushida (p. 6) — Illustration by Soraishinya (p. 8)
 * 3) Airi Sakura (p. 10) — Illustration by Mayuri Kaichō (p. 12)
 * 4) Kei Karuizawa (p. 14) — Illustration by Hoshi (p. 16)
 * 5) Honami Ichinose (p. 18) — Illustration by Greatmosu (p. 20)
 * 6) Mio Ibuki (p. 22) — Illustration by Hisao Ishii (p. 24)
 * 7) Arisu Sakayanagi (p. 26) — Illustration by Kedama Tamano (p. 28)
 * 8) Kiyotaka Ayanokōji (p. 30)

Anthology Comics
In order of listing:
 * 1) "Pinching Using Scissors" by Kasumi Morino (p. 33)
 * 2) "The Ruler's Wand" by Sanchō Shiun (p. 47)
 * 3) "The Hidden Ordinary Happiness" by Yukichi (p. 61)
 * 4) "I'd Like to Get along" by Mugiko (p. 71)
 * 5) "Sakura, Camera and 〇〇〇" by Senbei (p. 79)
 * 6) "The Delusion of High School Boys" by Yūya Ishimari (p. 89)
 * 7) "Kiyotaka Ayanokōji Will Not Laugh" by Suzume Somemiya (p. 97)

Mono Illustrations
In order of listing:
 * 1) By Tokiwamidori (p. 107)
 * 2) By Sakagaki (p. 108)