When Sophie enters the living room, she finds Akari and Hinata staring tired and defeated at the table.
She then finds out that summer break is almost over, yet almost none of their homework is finished, 
which is why the two of them are doing a homework marathon.
Then, with progress already being slow, Erie makes an appearance.
She suggests that she could help with the homework, however...
I think it's time for us to go to bed.
.أظنّ أنّه حان الوقت لنخلد إلى النوم
Ich geh langsam mal schlafen.
Creo que debemos irnos a la cama.
Creo que deberíamos irnos a la cama.
On devrait se coucher.
Mi sa che per noi è ora di andare a letto.
Acho que está na hora de dormir.
Пора бы ложиться.