A Yatagarasu youth with a pair of red wings on his back. He is Utsuho Reiuji's older brother and one of Satori Komeiji's pets (Original Character). He has recently become obsessed with inventing things, mostly creating weird junk, but this time he has finally made something truly outrageous. He is very proud of himself.

A Satori youkai girl with the ability to read minds. She has been troubled by Jinmu's inventing habit for a while now, but this latest creation was far beyond her expectations.

A Kasha girl with the ability to carry away corpses. She holds a grudge against Jinmu ever since he used her as a test subject for his 'Glasses that See Through Underwear' invention.

A Satori youkai girl with the ability to manipulate the unconscious. She was the first to notice Jinmu's inventing habit, but she left him to it because it looked fun. Even she is speechless this time, however.

A Yatagarasu girl with the ability to manipulate nuclear fusion. Jinmu's younger sister. She didn't even notice her brother's inventing habit until very recently.

An AI-equipped super-dreadnought tank created by Jinmu. It is so durable that even Reimu's Fantasy Seal cannot leave a scratch, and it possesses firepower capable of leveling a mountain in a single shot. Only Jinmu can pilot it. It is sentient and surprisingly humorous... though it mostly just cracks dirty jokes.