Tanaka is a math genius who uses his copy skill, "Mimic," to steal powerful abilities. He orchestrates chaos in his class for his own gain, aiming to take every classmate's skill. Tanaka eventually faces Haruka in an intense duel, where unexpected twists decide their fate. The otaku group, expected to be weak, are actually the strongest and break away from the class after being mistreated.
No specific appearance details are given in the source.
Tanaka is highly intelligent and strategic, always thinking several steps ahead. He is cold and calculating, caring only about gaining more power. He does not seem to value friendship or teamwork, using others only for his personal goals.
Tanaka's main ability is "Mimic," which allows him to copy the skills of others.
After defeating the Class Rep, he fully gains the "Plunder" skill.
He collects many skills from the delinquent group as well.
He tries to finish opponents using deadly skills like "Instant Death," showing how ruthless and dangerous he can be.
Tanaka manipulates the delinquent group and later turns on them, killing them when they are no longer useful.
He tries to weaken the jock group as part of his plan, causing great division in the class.
The otaku group recognizes Tanaka's dangerous intentions and separates themselves from him and the rest of the class.
Mastermind and Chaos Creator
Tanaka stands out as the one who, using his genius mind and the "Mimic" skill, copies the "Plunder" skill from the Class Rep after defeating her. This allows him to steal skills from other classmates entirely, setting his sights on taking the abilities of everyone in the class.
Destroying the Class from Within
Tanaka joins forces with the delinquent group, leading them to act out against others in the class. His actions throw the class into chaos and conflict.
Betrayal and Massacre
When the delinquent group has served their purpose, Tanaka coldly betrays them, killing them all. He then attacks the jock group, injuring them so they would move toward the girls' group.
Haruka vs Tanaka: The Final Duel
Tanaka plans for the jock group to fight the girls, but they realize Tanaka's true intentions. Instead, the jock group seeks out Haruka, forcing Tanaka and Haruka into a one-on-one battle.
Tanaka believes Haruka's skills are all useless and uses many abilities to overwhelm him.
However, Haruka surprises Tanaka by using his "useless" skills in creative ways and finds Tanaka's weakness.
Tanaka's final move, "Instant Death," fails against Haruka because Haruka gains resistance through "Health" and "Maximum Luck."
In the end, Tanaka is defeated. In the original novel, Haruka barely remembers Tanaka's name and defeats him with little notice, but in the manga and anime, their showdown is shown as a fierce battle.
The Otaku Group's Rise
The otaku group had always prepared for life in another world and knew a lot about it.
Because of this, they were actually the strongest in the class, not the expected weak links.
However, the class treated them badly and gave them impossible tasks, leading the group to finally break away and become independent.
Haruka finds it easy to talk with them, as they share common interests.
After Tanaka and the delinquents are taken down, the gal group apologizes and makes peace with the otaku group, but the otaku group chooses not to rejoin the main class. They operate on their own but will join up for parties when needed.
Main Members of the Otaku Group
In the original novel, Haruka does not even remember Tanaka's name clearly and defeats him easily. In the comic and anime, their battle is much more dramatic.
No direct quotes are given in the source material.
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