After taking in an extremely poor mother and daughter who had nowhere else to turn, she was thanked and, in order to repay the kindness, she had a nightly "parent-child donburi" (a euphemism for sexual intercourse). (Miu Arioka, Yuuno Hoshimiya, MIAA-642)

Her husband vanished with his mistress, leaving behind a huge debt! The mother and daughter were left struggling to pay it off... and they sought help from me, their neighbor. After lending them my bathroom, they reciprocated by offering me their bodies as a token of gratitude...