TV-Series
Description
Oochopus manifests as a three-meter-tall yellow octopoid entity with a bulbous head displaying a fixed smile and small beady eyes. Multiple tentacle limbs provide mobility and manipulation, two specialized into arm-like appendages with fine feeler fingers. His skin shifts color with his emotions, typically clad in a black academic gown, mortarboard cap sporting a yellow tassel, and a distinctive black tie patterned with a yellow crescent moon—a significant gift from a formative figure. Hidden nostrils sometimes create an illusion of additional eyes.
Originating from violent, unnamed slums where betrayal was endemic and survival demanded self-reliance, he never knew his birth name or date. He embraced a core philosophy of skill, money, and death, becoming an assassin known as "The Reaper" after one thousand kills. His reputation for breaching impenetrable security stemmed from exploiting opponents' weaknesses through intellect, strength, or charm. His perspective shifted when a victim's child witnessed a kill and became his apprentice. Viewing the apprentice solely as a tool, he maintained control through fear, resulting in betrayal during a prison escape where the apprentice abandoned him to claim the "Reaper" title.
Captured post-betrayal, he endured involuntary experiments at a clandestine lab merging organic antimatter with human cells. Confined and dehumanized, he met Aguri Yukimura, a teacher trapped in an abusive marriage with the lead researcher. Initially tasked with monitoring him as a disposable asset, Aguri instead offered compassion, sharing exam materials and genuine conversation. This fostered mutual trust and taught him empathy. On his imprisonment anniversary, Aguri gifted him the crescent moon tie to combat cold, symbolizing their bond in lieu of a birthday.
A critical turning point emerged when researchers discovered antimatter-infused subjects would trigger catastrophic explosions upon death—confirmed when a lab rat's demise destroyed 70% of the moon. Learning his death would annihilate Earth by March 13 the following year, the facility head ordered his execution. Aguri intervened, warning him despite the risks. Resigned to his fate, he activated enhanced abilities to escape, inadvertently causing a structural collapse. Aguri sustained mortal injuries from a defensive mine during the escape. Her dying wish urged him to teach her students, envisioning his potential as an educator. Honoring her, he adopted the tie as a memento, fashioned teacher attire from scavenged materials, and assumed responsibility for the moon's destruction. He issued an ultimatum to world leaders: appoint him homeroom teacher for a designated junior high class, permitting student assassination attempts while forbidding him from harming them, offering humanity a chance to prevent planetary destruction.
As instructor, he employed unconventional methods blending academic rigor with assassination training. He provided specialized BB pellet weapons capable of harming him while ensuring student safety, demonstrating regenerative capabilities by regrowing severed tentacles. His approach balanced strictness and approachability, adapting lessons to individual students' academic weaknesses, emotional challenges, and interests. He maintained constant vigilance for their physical and psychological well-being, reacting fiercely to external threats—like violently confronting kidnappers who assaulted students on a trip. This protectiveness sometimes surfaced alongside remnants of his "Reaper" persona, using intimidation to deter student self-destructive behavior.
Personality traits include a fondness for sweets, gossip, and playful mischief. Experimental alterations prevent concealing genuine emotions. His past fostered manipulative tendencies, but Aguri's influence cultivated consistent kindness and empathy. He developed deep observational skills, identifying and nurturing each student's potential through personalized guidance. Habitual cheerfulness coexists with moments of pettiness; he transitions rapidly from levity to severity when student safety is compromised. Emotional connections to the class grew throughout the year, driving him to prioritize their growth and futures as the planetary deadline approached.
The name "Oochopus" combines "unkillable" (殺せない, *korosenai*) with "teacher" (先生, *sensei*), assigned by a student symbolizing his dual role as both target and mentor.
Originating from violent, unnamed slums where betrayal was endemic and survival demanded self-reliance, he never knew his birth name or date. He embraced a core philosophy of skill, money, and death, becoming an assassin known as "The Reaper" after one thousand kills. His reputation for breaching impenetrable security stemmed from exploiting opponents' weaknesses through intellect, strength, or charm. His perspective shifted when a victim's child witnessed a kill and became his apprentice. Viewing the apprentice solely as a tool, he maintained control through fear, resulting in betrayal during a prison escape where the apprentice abandoned him to claim the "Reaper" title.
Captured post-betrayal, he endured involuntary experiments at a clandestine lab merging organic antimatter with human cells. Confined and dehumanized, he met Aguri Yukimura, a teacher trapped in an abusive marriage with the lead researcher. Initially tasked with monitoring him as a disposable asset, Aguri instead offered compassion, sharing exam materials and genuine conversation. This fostered mutual trust and taught him empathy. On his imprisonment anniversary, Aguri gifted him the crescent moon tie to combat cold, symbolizing their bond in lieu of a birthday.
A critical turning point emerged when researchers discovered antimatter-infused subjects would trigger catastrophic explosions upon death—confirmed when a lab rat's demise destroyed 70% of the moon. Learning his death would annihilate Earth by March 13 the following year, the facility head ordered his execution. Aguri intervened, warning him despite the risks. Resigned to his fate, he activated enhanced abilities to escape, inadvertently causing a structural collapse. Aguri sustained mortal injuries from a defensive mine during the escape. Her dying wish urged him to teach her students, envisioning his potential as an educator. Honoring her, he adopted the tie as a memento, fashioned teacher attire from scavenged materials, and assumed responsibility for the moon's destruction. He issued an ultimatum to world leaders: appoint him homeroom teacher for a designated junior high class, permitting student assassination attempts while forbidding him from harming them, offering humanity a chance to prevent planetary destruction.
As instructor, he employed unconventional methods blending academic rigor with assassination training. He provided specialized BB pellet weapons capable of harming him while ensuring student safety, demonstrating regenerative capabilities by regrowing severed tentacles. His approach balanced strictness and approachability, adapting lessons to individual students' academic weaknesses, emotional challenges, and interests. He maintained constant vigilance for their physical and psychological well-being, reacting fiercely to external threats—like violently confronting kidnappers who assaulted students on a trip. This protectiveness sometimes surfaced alongside remnants of his "Reaper" persona, using intimidation to deter student self-destructive behavior.
Personality traits include a fondness for sweets, gossip, and playful mischief. Experimental alterations prevent concealing genuine emotions. His past fostered manipulative tendencies, but Aguri's influence cultivated consistent kindness and empathy. He developed deep observational skills, identifying and nurturing each student's potential through personalized guidance. Habitual cheerfulness coexists with moments of pettiness; he transitions rapidly from levity to severity when student safety is compromised. Emotional connections to the class grew throughout the year, driving him to prioritize their growth and futures as the planetary deadline approached.
The name "Oochopus" combines "unkillable" (殺せない, *korosenai*) with "teacher" (先生, *sensei*), assigned by a student symbolizing his dual role as both target and mentor.