A difficult-to-reserve, hidden men's spa. Contrary to the usual men's spa, the therapist only wears a men's dress shirt! She is slender and very cute, and sometimes her breasts peek out from the neckline of her shirt. The treatment is incredibly relaxing, and despite my best efforts, my penis reacts with twitches. Noticing this, the therapist sister asked, "Would you like to change to the premium course?"