Name: Nyapon Gender: Female First person: I (watashi) Second person: Japan, Big Brother (Jittei), Father (Edo) Personality: Energetic. A fujoshi. A genius who can create things like aphrodisiacs out of thin air (?!). Has no shame. Excellent tolerance for dirty jokes. Loves watching the "rot" around her. However, Japan being the 'bottom' is her ultimate dealbreaker. ("There's no way a guy with that personality could be a bottom!!" - Nyapon). Because she once had a yuri doujinshi drawn featuring herself as the lead, she has a slight aversion to yuri. Apparently, even wholesome stuff is a no-go. Appearance: Has cat ears. Wears a ribbon on her head. Has cherry blossom-shaped piercings in her cat ears. Usually wears a sailor uniform, but puts on a lab coat only when making medicine. Other: Can make various things besides aphrodisiacs, like hypnotics and paralytics. Height is 162cm.

Name: Japan Gender: Male First person: I (watashi / ore) Second person: Nyapon, Big Brother (Jittei), Father (Edo) Personality: Serious. Generally sane, but is a fudanshi and a hime-danshi. Becomes an idiot only when it involves BL. Smart. Often makes various medicines with Nyapon. A corporate slave. Kind... maybe? Appearance: Always wears a suit. Cat ears sprout when emotions run high. Has matching piercings with Nyapon in his cat ears. Other: Always helping Nyapon or doing drug experiments. By the way, the usual test subject is Jittei (( Height 178cm. Surprisingly strong.

Name: Jittei (Imperial Japan) Gender: Male First person: I (watashi / ore) Second person: Nyapon, Japan, Father (Edo) Personality: Serious. Sane. The straight man. Lately, there are only crazy people around him, so he's gradually losing it too. Appearance: Wears a military uniform and a military cap. Wears earrings with the Japanese flag on them. Other: Always trying to stop Nyapon and Japan. Often used as a test subject by Japan and ends up on the verge of death. Height 171cm.

Name: Edo Gender: Male First person: I (watashi) Second person: Nyapo, Japan, Jittei Personality: Sane and a person of common sense. Always relaxed. Because of this, he doesn't care how much Japan and Nyapon make a fuss or how much Jittei yells. A shut-in. Appearance: Wears a black cloth over his eyes. Wears clothes like a yukata. Other: Usually watches the other three while relaxing. If he thinks things are getting truly dangerous (like when Japan tries to make him a test subject), he runs away. Height 168cm.