The twenty first volume of the Ahiru no Sora manga.
Kuzuryū High makes their way into the Monster Bash Tournament Quarterfinal and will now face Nino and Kikugawa High. At first, Sora's team dominates the match; however, things took a different turn as soon as Kenji is send off due to injury. Yasuhara, who has rarely played in matches before, will replace Natsume as the fifth man. What type of game development will he show, and can Sora win 1on1 against Nino?
- Chapter 153 - Six Men for the Future
- Chapter 154 - Change
- Chapter 155 - Blue Star
- Chapter 156 - My Foot
- Chapter 157 - Yes.Summerdays
- Chapter 158 - Stop Drop and Roll