2화: 가즈키가 유우지를 집 돌보며 무절제 없는 하루를 도전하다

2

With the parents of both households stuck on a South American island for an indeterminate time, they ask their children to take care of each other. Kazuki refuses to admit the dirty-minded Yuuji into the home, unless he manages to spend the whole day without doing anything indecent, so they have a competition. (Source: Wikipedia)