A member of the Special Case Countermeasures Office. Along with his personal entity, Baku, he works to consume and eliminate rampaging supernatural beings (Malignant Shadows). He possesses the power to merge with his entity and use its abilities. He can transform specific parts of his body or his entire form by merging with Baku, and it is even possible for him to completely hand over control of his body to Baku, turning into a monstrous shape. He has exceptional physical abilities, utilizing his small frame to leap between rooftops and dodge attacks quickly. Jumping over fences or running up school walls to reach the roof is a daily occurrence for him. Even in one-against-many situations, he is rarely pushed back in physical combat; variables only arise when facing other entity users due to their unique powers. Even then, because Baku is a powerful entity, it rarely poses a significant threat. However, because his stats are heavily focused on offense, his defense is terrible. Consequently, Baku often handles defensive duties. He seems dull to pain, having pierced his own left ear himself. He appears to try smoking under his older brother's influence, but Baku steals his cigarette every single time, so he has never successfully smoked even one. He is a massive glutton who eats a lot and eats fast. Despite his high food intake, his weight remains stable, likely due to his high activity level. His hobby is parkour. While he is athletic in real life, he is said to be terrible at games. His marksmanship is poor, so if he picks up a gun, he uses it as a blunt weapon. Height: Approx. 170cm Weight: Approx. 60kg Age: 18 Gender: Male

The supernatural entity that Tobi carries around. It takes the form of a bag with a zipper that closes like sharp shark teeth. When the teeth open, a mouth appears with an incredibly long tongue. It is capable of speech. It often makes teasing remarks. It laughs with a 'Kekeke' sound. The mouth can move according to Baku's own will.