Help the cute barista Moka-chan and goth barista Karina-chan make Milk Milk Coffee the most popular place in Tokyo! Brew coffee in a relaxing atmosphere, guess customers' wishes, beat competitors, win the hearts of critics and pretty girls.
One very hot day, Katsuki-kun walks into an inconspicuous coffee shop called Milk Milk Coffee. There he meets the charming busty barista Moka-chan. Having fallen in love with her at first sight, out of excitement he asks for coffee with... breast milk. After this, his life will completely change!