Mako has to go on a long business trip, so she asks her close friend to come over to take care of her son. The boy is quite interesting, and since she and he have met a few times, their meeting this time does not make either of them shy, as they are already familiar with each other. The boy is quite mischievous; he finds this aunt's breasts rather large, so he feels a little curious, and the conclusion for him is.