よく分からんが　宿舎が空いてなくて
このショウって子と同室になった

「はぁ…はぁ…　あ　ごめ…ん　なさい　私なんかと…一緒の部屋で…
　いや…ですよね　ンレロ　じゅるるる…　せめて　夜伽（よとぎ）くらいは…努めます…ね」

I don't really get it but, the quarters aren't vacant
Yet I'm in the same room with this Akari kid

"Haa...haa... Ah, sor...ry, in the same room together...with someone like me...
No... right...? N-*lick* *slurururp...* At least... for keeping vigil... I'll do my best...yeah?"
夜伽 (yotogi), translated here as "keeping vigil", means "to watch over someone overnight"; it also refers to "the act of a woman sleeping with a man, at his bidding."