the beautiful female teacher Mizuki Amane falls in love with the gymnastics club member Yuu Kitayama, unaware that she is a lesbian. Mizuki invites Yuu to her home after learning about her feelings. The maniacal Mizuki begins a lesson in the gym storage room with a wet kiss! Yuu's leotard gets wet, and her nipples become sensitive. Her pussy is licked and penetrated with a strap-on... A forbidden lesbian story filled with the sweet and sour smell and obscene close-up licking!