There Was a Beast Inside the Skirt.

Shizuka attends a party, but her mood is dampened. Her spirits lift when a captivating woman, Ryou, approaches her. The two decide to leave the party and share a drink together, quickly discovering a connection. As the night progresses, Shizuka finds herself at Ryou's residence, where a sudden and intimate kiss leaves her stunned. Convinced that Ryou is a lesbian, Shizuka is taken aback when she feels a hard object beneath Ryou's skirt. The revelation that Ryou might actually be a man sends Shizuka's mind into a state of confusion. As Ryou's fingers touch her most intimate area, Shizuka is left bewildered, unsure of how to process this shocking discovery.