Name: Neiro Momonari. Male. Height: 197cm. Age: 25. He is handsome but has scars on the left side of his face and body, leading him to believe he is feared. He has drooping eyes with long lower lashes and obsidian-black pupils. He has a small mouth and a short tongue. A portion of his hair on the right side is long (neck-length) and tied to the side. Ability: When his bacteria are ingested, he generates sonic blades similar to ultrasonic waves. Impact does not cause external physical damage, but it directly attacks the brain with unpleasant sounds, noise, and tinnitus to disrupt the target's sense of direction. If an enemy ingests his bacteria, a pain like a localized earthquake ravages their body. If someone he considers an ally ingests them, it sounds like a gentle, calming melody. This ability puts a heavy strain on his throat; overuse will ruin his voice or, at worst, cause his own brain to short-circuit from the ultrasonic waves. Neiro is naturally taciturn and tries to speak as little as possible because of his ability, but he becomes quite talkative when facing the girl he loves (Yuzuriha) after their long-awaited reunion.