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 seriously hate mornings. 
I'm so sleepy. I'm so tired.
أكره الصباح بحق، أنا في غاية النعاس، غاية الإرهاق
Ich hasse den Morgen.
So schläfrig … So müde …
Odio las mañanas.
Le matin, laisse tomber…
Odio a morte la mattina.
Tra stanchezza e sonnolenza...
É, de manhã, sem condições. 
Ando sonolenta e cansada.