Shun is the only male teacher at Kyoukasen Girls School. He seeks out female students who have low self-esteem and fills them up with confidence - and possibly his dick.
Yayoi is a sexually frustrated housewife with a workaholic husband who hasn't been paying her enough attention. She decides to use her sex toys, but it just isn't the same. She needs a real cockmeat sandwich. And she needs it now.