Galko's skin got really dark as a result of tanning.
Otako comments that since Galko's skin has tanned so much, her nipples must be dark as well. Along with Ojou, Otako yells that Galko has dark nipples.
Then, which of these is 
closest to the actual size?
أيّ هذه أقرب للحجم الحقيقي إذاً؟
Welcher davon hat dann
die wahre Größe?
Entre todos, ¿cuál tiene
 el tamaño más parecido?
Quel biscuit s’en rapproche le plus,
niveau taille ?
Allora quale di questi è della misura giusta?
Então, qual destes se aproxima do tamanho?