(informal) Clipping of はい.

哀歌: the Book of Lamentations / a female given name / 愛下, 愛禾, 愛華, 愛賀, 会賀, 合賀: a surname / 秋賀, 秋鹿, 秋廉, 相可, 相賀, 藍賀: a surname

(Kagoshima, dialect) thank you

慈愛: affection

Understood.

sharing a room (accommodation)

an adult son residing with his parents; generally has not yet or can not come into family inheritance / a female servant working in a daimyō, ōoku, or other high-ranking house

room rent

at-home clothes

(Internet slang) dirty room