At the PC Engine CD boot screen, hold Right + II and press Run. When the game starts, release the buttons and press Run to get to the title screen. At the title screen, hold Left + II + Select and press I. If done right, you'll be taken to the debug menu.
At the password screen, enter each of the following characters pictures. These are the characters from left to right in case you are not familiar with them: Ranma Female, Ranma, Akane, Ryouga, Shampoo, Mousse, Kunou, Kodachi, Nabiki, Kasumi, Soun, Panda, Dr. Tofu, Skeleton, Guide, Genma.
Effect Password Chapter 2 Kodachi, Akane, Ranma Chapter 3 Shampoo, Kunou, Panda Chapter 4 Shampoo, Kodachi, Soun Chapter 5 Shampoo, Dr. Tofu, Ryouga Chapter 6 Shampoo, Guide, Dr. Tofu Chapter 7 Genma, Ryouga, Panda Chapter 8 Kasumi, Guide, Skeleton
At the game's ending, when the credits are over and you see Panda hitting the Gong, wait until the background goes black and then press I. You should go to another screen with scrolling Japanese text. Wait until all the text scrolls up and then press I again. If done right, you should get a bunch of hidden Ranma art scenes.
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