Galko, Otako, and Ojou are at the water park.
Otako hands Galko a razor believing that her armpit hair is shaggy because she forgot to shave them. Galko angrily says she never lets them get shaggy and shows them her smooth armpits.
so her only option was a bikini so she 
can adjust the size with the straps.
لذا كان خيارها الوحيد بيكيني بأريحية في أحجام الحبال
bei dem man mit den Schnüren die Größe
verstellen kann, die einzige Option.
no tenía otra opción que ponerse un bikini
no tenía más opción que ponerse un bikini
qu’à part les bikinis à ficelles,
Il bikini è l'unico che si può regolare,
 visto che ha i laccetti.
que sua única opção era usar biquíni,
para poder ajustar o tamanho com as alças.