Enkou JK Bitch Gyaru - Oji-san to Nama Pako Seikatsu

The protagonist is an average company worker. Although he makes good cash, he's living a life devoid of passion. Having moved to his new post, he gets seduced by two slutty kogals into hooking up and engaging in compensated dating with them. The protagonist's life is then complemented by a variety of slutty kogals: - A cheerful tanned kogal, Itano Ayumi. - her less promiscuous-looking, tidy friend, Mikado Nana. - the little sex-demon, Yamanami Hime. - the pure type, Sumiyoshi Yuzune. - the ice queen type, Etou Rimi. [Translated from the Official website]