Reclusive high school student Nukui Kyo uploads a song to a video site, attracting the attention of a trio of musically-inclined fifth-graders.
Stay calm.
ابقَ هادئاً
Bleib ruhig.
Tranquilo. 
Tranquilo.
Du calme.
Voyons les solutions que j’ai…
Mantieni la calma.
Tenho que manter a calma.
Так, без паники.