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".
You stay here, Hanabi-oneechan.
Du bleibst hier, Hanabi-oneechan.
Escóndete, hermanita Hanabi.
Escóndete, hermanita Hanabi.
Reste ici, Hanabi.
Tu rimani qui, sorellona Hanabi.
Fique aqui, Hanabi-oneechan.