Gochuumon wa Usagi Desu ka??: Sing for You
ご注文はうさぎですか?? ~Sing For You~
In the story, Chino is chosen to have a solo part at a concert. Chino asks Rize to help her get accustomed to singing in front of others, and so they have a karaoke tournament. But, as Chino practices, everyone gets overly excited about the upcoming event, making Chino nervous. (Source: ANN)