(PC Engine)
...okay, this part just freaked me out.
It's the morning of Day 02, and you check in on Ryoko. You hear an odd noise, and go inside to a dark room. You turn the light on, and Washu's whipping Ryoko!
It seems to be some sort of harsh diet program, but my Japanese skills fail me this time. When Ryoko starts getting sexual gratification from Washu's whipping, Tenchi (and I) decide to make a timely exit.
27-33