Hosaka Yuriko, Kyoko Yoshino invited Shiori Akagi and Ryoko Murakami to a party

Every time they are making a private party, Hosaka Yuriko, Kyoko Yoshino are happy to invite Shiori Akagi and Ryoko Murakami to come, because no party is good enough without them. Since every party includes casual sex until everyone gets completely exhausted, it is not wonder that every opportunity there is, for all those horny people to gather in one place, is being used till the last moment, because everyone is horny all the time. Many ladies from the regular group are married, but their husbands think that they are just having fun with friends, which is true, bottom line, but none of husbands knows how many dicks is his wife sucking during one of those crazy gatherings at night.