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".
Take this!
Nimm das!
¡Tomen, tomen, tomen!
¡Tomad, tomad, tomad!
Prends ça, et ça, et ça !
Prendi questo!
Toma isso!