内気な豊乳コスプレ女上司美鶴の憂鬱（Uchiki na Hounyuu Cosplay Onna Joushi Mitsuru no Yuuutsu）

A game about married and mature women!
Hot ladies in their midlife in sailor outfits, erotic bikini, china dress, cheerleader outfits and more!
Fall in love with a milf and her imouto with big breasts: a hot harem cosplay love story!
Hikaru Migakeba and Carlos, the staffs from "Confessions of a Debauched Wife", depict a buxom bashful boss in her 30s. Choose from multiple endings and branching situations as you pursue heroine Mitsuru.

The Story
"Um... how is it...? ... Do you feel good? ... ... Please... cum... cum for me..."
Her breasts spilled lewdly from the open front of her curvy form-fitted chinese dress.
Such an enticing body was at odds with her demure personality.
She was my company manager, Mitsuru Saeki, endlessly sexy and endlessly appropriate.
Her face blushed red as she stared at my erection, timid and breathlessly anticipating my semen.
Since that day he delivered some documents and he learned of Mitsuru's cosplay and her younger sister Marue,
the three of them were in a deepening love affair...

[From DLSite English]