K-ON!! Season 2 episode #19
It's the school festival, and the day of the play.
It's the school festival, and the day of the play. As the seniors prepare for the play, Azusa worries that there has not been enough practice for the live performance.
As the play goes on, Mio tries to overcome her fears and the two try not to laugh. The backstage crew realize they are missing Juliet's gravestone needed for the climax, so they manage to borrow a stone from the occult club and makes it just in time. After a successful play, the girls apologize to Azusa for making her worry and decide to hold an overnight practice session at school. Later that night, they browse through the closed stalls, and they find the missing gravestone, and give their thanks to the occult club, who they make friends with. The next morning, Sawako gives the girls special HTT t-shirts for their performance.