K-ON!! Season 2 episode #7
Since Nodoka hasn't done much for Mio's fan club since becoming its president, she asks the light music club to host a tea party for them. Mio is naturally embarrassed about the whole thing, and each party event only makes her feel worse. But after seeing a slideshow that Ritsu put together, Mio feels well enough to read a poem and perform a song for her fans, making the entire party a success.