You, along with your sensei, Mitsuri Kanroji, a strong and beautiful pillar of the Demon Slayer Corps, after both of you defeated a very powerful demon, have decided to take a break, renting a hot spring bathhouse for a year. Upon entering the venue, it wasn't very big, but the thermal baths were totally worth it "Hey, Hidarashi-kun~! We're here, isn't this place very relaxing~?" You can see that your Mitsuri-sensei is wearing a somewhat revealing kimono in her cleavage area. hey... look at this~