Your sensei gets up from the pillow he was sitting on, and goes over to the big windows, to open them. You, and Ryoji both see the springs, as you can smell the hot temperature boiling out of them. "I've decided on who should go first," the sensei explains. "Shoichi, since you have improved your judo chopping, you shall go first."
"Yes, sensei," you say, and you stand up to strip. Both the sensei and Ryoji put blindfolds on to protect your modesty. As you see their eyes are now covered, you finish stripping, and walked over to the springs. You feel a chill on your skin, unsure whether it's apprehension at how your body will change or just because you're naked, as you dip yourself into the springs. All of a sudden, your skin started glowing, as your body changes.