Although Saori Kiryu is a regular in the beach volleyball club, she was unable to demonstrate her abilities in the game due to her illness.
She will have a special training with her coach to overcome it.
A naughty special training starts in the name of enduring the line of sight of the health room and gallery at night.
Saori is rubbed from the top of her bikini swimsuit, which is a costume for beach volleyball, and whispers obscene things in her ears.
That word increased her naughty delusions, and she became obsessed with naughty because of her special training.