I'm an old lady like this, but is it really okay for me...? ~Secretly expelling sex with my husband's subordinate~

Kojima, who has recently become tired from lack of exercise, is invited by his boss's wife, Toko, to train with him. Kojima, who had secretly liked her, can't stand her as she shows off her unconscious and well-established appearance and gets an erection... Toko, who hasn't had sex with her husband for a long time, is swayed by his overflowing sexual desire and shyly accepts her, "Is this an old lady okay?" This leads to the excitement of the two of them, not knowing that their sexual desires will last...