|Season 1, Episode 13|
|Air date||June 28, 2013|
|Episode 12||OVA 1|
|Name||"And So, Their Festival Will Never End"|
|Romanji||"Dakara, Karera no Matsuri wa Owaranai."|
Episode 13 of Season 1 was an Anime exclusive at the time of release (June 28, 2013). It was later adapted to light novel format in Volume 6.5 (July 22, 2014).
The Service Club receives an email on the Trans Chiba Advice Please website from Shiromeguri Meguri, the Student Council president. Meguri wants their help making the Athletic Festival a "blast" for students. She also wants to win as it is her last year at Sobu High School.
After having all of their special event ideas rejected by Shizuka Hiratsuka they decide to "outsource" the planning to experts, Zaimokuza and Ebina. They decide on a Chiba Shouldertop Engagement (ChibaSEn) for the girls event, and a two way Bo-taoshi event for the boys.
Hayato is keeping the white team ahead by winning many events. The red team needs to win both the girls and boys special events to win the festival. The red team, led by Yukino, Yui, and Meguri, wins the girls event.
Hachiman comes up with a plan involving himself and Zaimokuza using a twofold deception. Hachiman's plan succeeds as Zaimokuza is able to knock down the white teams pole to win the game. Meguri is seen celebrating with Yukino and Yui.
The next day in the club room it is revealed that the boys team was disqualified because "someone's" (Hachiman's) plan was deemed illegal. They promise to win next year, Hachiman points out they may not be on the same team next year and this motivates Yukino even more.
- Meguri's screen name is Megu Megu.
- The girls general outfits for their ChibaSEn event are based on Saber's outfit from Fate/Stay Night.
- The ChibaSEn event is loosely based on the Battle of Konodai.
- The ChibaSEn event is similar to Wife-Carrying events.
- Nagayama is mentioned as a member of the soccer team.