Rumi, a phone sex operator making ends meet, falls for her most challenging client yet: Ryo, a young man who transforms into a monstrous beast when he's aroused. But Rumi’s not the only one with her eye on the cursed caller.

• C.Moon
• Anime International Company
• Sakiko Tamagawa
• Katsumi Toriumi
• Chie Koujiro
• Toshihiko Seki
• Rumiko Ukai