Summer Training!
Unable to get Mio to hang out with her, Ritsu runs into Tsumugi who decides to hang out with her. They go to an arcade and then to a candy store, where Tsumugi is fascinated by all the cheap items. Meanwhile, Yui has Nodoka over to help with her homework, and gets upset when she eats the strawberry off her cake. Later, Tsumugi asks Ritsu to hit her, wanting the same skinship she has with Mio, but Ritsu cannot bring herself to do it. As a compromise, Ritsu attempts to train Tsumugi to be dopey enough that Mio would hit her instead, but to no avail. Hoping to make an opportunity, Tsumugi eats the strawberry off Mio's cake, but this just makes her cry. Having given up when a direct request to Mio also fails, Tsumugi finally gets hit when she implies Ritsu would be popular with the girls if she was a boy.
Aired 07/07/2010EP 14 - Summer Training!

K-ON! Season 2
It is the new year, which means that the senior members of the Light Music Club are now third-years, with Azusa Nakano being the only second-year. The seniors soon realize that Azusa will be the only member left once they graduate and decide to recruit new members. Despite trying many methods of attracting underclassmen—handing out fliers, bringing people into the clubroom, and performing at the welcoming ceremony—there are no signs of anyone that plans to join.
While heading to the clubroom, Azusa overhears Yui Hirasawa say that the club is fine with only five people and that they can do many fun things together. Changing her mind, she decides that they do not need to recruit any members for the time being.
K-On!! revolves around the members of the Light Music Club as they experience their daily high school life. From rehearsing for concerts to just messing around, they are ready to make their last year together an exciting one!
(Source: MAL Rewrite)