第 21 集: 三矢缺席，成績在準決賽迎戰京王原高中
2016年11月27日 播出
The opponent for the semi-finals is the newly founded team from Keiougawara High School. Even though Seiseki is missing it's "Three Arrows", Kimishita and the other third-years put on a strong show. (Source: Crunchyroll)