Twenty-First Period is the twenty-first chapter of the crossover manga series Seishun Kijinden! 240 Gakuen.
Summary[]
Characters in Order of Appearance[]
*Note: Bold = First Appearance
*Note: Italic = Flashback Appearance
- Hitoshiki Zerozaki
- Maiori Zerozaki
- Princess Hitei
- Tomo Kunagisa
- Ougi Oshino
- Koyomi Araragi
- Kyouko Okitegami
- The Nonsense User
- Nanami Yasuri
- Shinobu Oshino
- Noise
- Hitagi Senjougahara
- Yumiya Sawarabi
- Naguma Sawarabi
- Hawatari Sawarabi
- Hakuhei Sabi
- Izumu Niounomiya
- Episode
- Rinne Higaki
- Raichi Kino
- Toishi Ishinagi
- Seethrough
- Takashi Saitou
- Nukemichi Nukumori
- Rizumu Niounomiya
- Waka Wakamurasaki
- Magokoro Omokage
- Jikoku Tokinomiya
- Jun Aikawa
- Izuko Gaen