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.
I'm sure they've made up by now!
لا بدّ أنّهما تصالحتا الآن
Sie haben sich nun sicher wieder vertragen!
¡Espero que se hayan reconciliado!
Elles doivent être réconciliées,
à l’heure qu’il est.
Sono sicura che a quest'ora 
avranno già fatto pace!
Tenho certeza de que já 
se acertaram nesta altura!