[SONE-885] The one who feels it is not my beloved boyfriend... but the handsome masseuse at the women's sex club, Asuha Mitsuha (Censored)

Imagine this. You have a girlfriend you adore and are about to get married and live together. However, she's dissatisfied with the sex you have with her. She's secretly obsessed with a handsome man working at a women-only brothel. He's several times more handsome than you and has dozens of times better erotic techniques. Your lover is head over heels for this man, enjoying his thorough development. Today, the two of you are secretly choosing bath salts together...