Nao is a free-spirited lesbian who has decided to board at the house from her brother's job away from home. From the moment he lightly snatches Ryo's lips, the relationship between the two falls into a depth that crosses the line. Two people who meet in a homely Moe appearance, such as wearing an apron and cleaning. Intertwined tongues, overlapping mucous membranes and gushing mucus, courtship sighs that increase in concentration each time they seek flesh!