Ep. 6: Ratio and Birthday investigate the kidnapping of their friend Chiyu while confronting a serial killer.

Chiyu is kidnapped while working for a western artist, prompting Ratio and Birthday to investigate the case involving their childhood friend. Simultaneously, Minimum victim Moral kills another Minimum, leading Nice to suspect Art is hiding information. Ratio and Birthday interrogate Misty, a friend of the victim, without success. Birthday is abducted by someone seeking Misty, prompting Ratio to search for them. They recall how Ratio’s ability to foresee deaths caused him to isolate himself, yet he remained friends with the ill Birthday. Ratio rescues Birthday and Chiyu, discovering Chiyu’s manager is the mastermind. The manager, possessing an artificial Minimum, fights Ratio until Birthday intervenes. Nice and Murasaki arrive to capture the manager. The group learns of his artificial Minimum, and Nice informs Art that he knows the serial killer is Moral, who is using Gasquet’s form.
Episodes
- Ep. 2 · Nice and Murasaki investigate a serial murder case at Yokohamabane High School involving missing teacher Yasuo Kitazawa.
- Ep. 3 · Hamatora Investigates Facultas Academy Scandal and Takahiro's Emergence
- Ep. 4 · Hamatora assists in a commercial shoot while Art investigates minor gun crimes and a kidnapped Honey.
- Ep. 5 · Hajime and companions visit a hot spring inn while Nice investigates a cheating boyfriend.
- Ep. 6 · Ratio and Birthday investigate the kidnapping of their friend Chiyu while confronting a serial killer.
- Ep. 7 · Art's Tragic End and Moral's Distorted Vision of Equality
- Ep. 8 · Nice and Murasaki investigate a sleep drug while Theo competes in a triathlon.
- Ep. 9 · Three protects orphans while Nice and Murasaki hunt him amid a burning orphanage crisis.
- Ep. 10 · Moral exploits Three's rescue to hunt enemies while Takahiro seeks help from Hamatora for his body.