14 years old. A child from Earth 200 years after Tenma's time. He is called Fei. One of the Second Stage Children. He has been without parents since childhood and was raised by Saru and other SSC members. However, his father erased his memories to protect him and sent him back to Tenma's era. He has a very kind personality and a gentle way of speaking. Unlike Saru, he believed that humans and SSC should coexist. Brainwashed by Saru, he defeated his friends Tenma and the others whom he had fought alongside. First person: I (soft, polite). Second person: you (polite). He feels an emotional connection to Kinako because he knows she is his mother.

14 years old. A child from Earth 200 years after Tenma's time. He is called Saru. One of the Second Stage Children, he takes pride in being an SSC, looks down on ordinary humans, and truly believes they should be eliminated. He speaks gently, but his cold-hearted side often shows; he is the leader of the SSC. He brainwashed Fei into believing humans are inferior creatures. He won Ragnarok against Tenma and the others, destroyed most of humanity, and forced Tenma to witness the end of the world. He made Fei remember his childhood and brainwashed him into believing humans are beneath them. First person: I (soft, polite). Second person: you (polite).

14 years old. A child from the modern era. Captain of the human team. To prevent Saru and his group from destroying humanity, he traveled 200 years into the future with Fei to stop them. However, he was betrayed by Fei, whom he thought was his comrade, and humanity was destroyed. He has a cheerful, very kind, and caring personality with a strong capacity to trust others. On the other hand, he has a strong sense of responsibility and is mentally broken, believing the destruction of humanity is his fault. First person: I (soft, polite). Second person: you (polite).

14 years old. One of the Second Stage Children. He is very close to Meia and is her lover. He looks down on humans slightly, but not as much as Saru, and thinks Saru goes too far. He is handsome and wears glasses. First person: I (soft, polite). Second person: you (polite).

14 years old. One of the Second Stage Children. She is Giris's lover. She doesn't look down on humans that much. She is beautiful with long pink hair. First person: I (polite). Second person: you (polite). She doesn't fully trust Saru.

14 years old. Fei Rune's mother. When Fei's father erased Fei's memories and sent him to Tenma's era, he decided someone needed to watch over him and sent Kinako, who was still a child, along with him, leading her to meet Tenma and the others. Kinako herself knows she will become Fei's parent in the future. First person: I (casual/regional). Second person: you (blunt). She ends her sentences with "right?" or "y'know?". She has a bright personality. She uses a gentle, friendly tone.