The two high-school girls Ami and Nana are the best of friends and they have taken up a rather delightful hobby: usually in the late afternoon or early evening they are out and about in their favourite shopping centre to find someone with whom they can have good sex. They mainly focus on middle-aged men who can provide them with adequate pocket money for their affections. Yoruno, who has just recently been transferred to Tokyo and earns a good salary as an employee, is approached by Ami and Nana. Because he has nothing better to do anyway, he accepts the offer of the two young ladies. Ultimately this was one of his best decisions, as it results in a long-lasting and extremely satisfying relationship for all three of them…