"But a housewife always gives three options to choose from," Akira tried to explain. "It is always 'Dinner, bath or me?' Since we have already cooked something, that means that the dinner option is fulfilled. And we have cleaned the bath so that is done too. So the only thing left is 'me'.  What am I supposed to do if you choose 'me'?" Akira had no clue what he was suggesting that Roku should teach him. Would he still want to be thought if he knew what he was asking? But since he doesn't know anyway, Roku could make up something more harmless, for now, if he didn't want to teach Akira.