Sonoa gets drunk and ends up living at Tachibanakan. Yuu gets everyone to have a welcome party for Sonoa, so they meet by the riverside in appropriate outfits. Yuu has water guns waiting for them, and has everyone enter a "Water Gun Survival Game".
Shh. Be quiet.
Psst! Du musst leise sein.
Chut, pas un bruit !
Shh. Fa' silenzio.
Xiu. Fique quieta.