Northern White-faced Owl and Eurasian Eagle Owl are gathering a team of friends together to clean up the dilapidated Saitama Super Arena, the real-life venue of the Animelo Summer Live event. While there, the friends find cards that teach proper behavior while enjoying the concert, such as not using electronic devices. ("What's a 'mobile'?" "Doesn't look very tasty.") Later, the friends see how many people are entering the venue (far above their estimate of 100), and beat a hasty retreat.

Source: ANN

Note: A collaboration video of TV anime Kemono Friends and the animation song festival "Animelo Summer Live 2017 - THE CARD -" that was screened before the opening of each day at the festival (Aug. 25-27).

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Other: Kemono Friends