Maybe Akira didn't know that sex was also for pleasure and love between some partners, though in the modern world it seemed sex was considered bad and was associated with just being a transaction. Roku looked over at Akira and noticed his puzzled look, what did those two talk about while he was gone? He tilted his head a little before shaking his head and he went over to the black cat and rubbed his  head, "What's up?" he asked him as he gave him an equally puzzled look, "Did you and Hiyoko talk about something?" he asked her as he had to tell Akira that he'd be working tomorrow.