Tsunagu Hakamada/Synopsis

History
Tsunagu received an education at U.A. High School.

At some point in the past, he ascended to being among the top five Pro Heroes.

Vigilantes Beginnings Arc
Best Jeanist was in Naruhata when he receives a call for help due to a sudden Instant Villains outbreak that is causing panic in the streets. Best Jeanist and many other heroes who are also in the area, rush to the place of the outbreak and subdue all the Instant Villains in a short space of time.

Sometime later, Best Jeanist attends a meeting at the police station with several of the heroes who had participated in suppressing the outbreak, like Eraser Head, Endeavor, Midnight, Ingenium and many more. Once in the meeting room, Detective Tanuma informs them that the Instant Villains they had defeated are unwilling civilians who were injected with Trigger by someone.

When the meeting ends, and Best Jeanist is about to leave to return to his duties, the police station is attacked by the Suicide Bomber. Best Jeanist and other heroes prepare to defeat him before he hurts someone, but the villain is quickly defeated by Midnight and Eraser Head. Given that everything has ended well, Best Jeanist leaves.

Vs. Queen Bee Arc
The Marukane Department Store decides to hold an event about the Naruhata neighborhood, and they wanted appearances from hero involved in the recents outbreaks of villains. Best Jeanist is one of those who accepts the invitation. Except for a sudden blackout, the event proceeds without incident.

Sky Egg Bombing Arc
Best Jeanist accepts Makoto Tsukauchi's invitation to participate in the farewell show dedicated to Captain Celebrity at the Tokyo Sky Egg on the occasion of his return to the United States. During the event, he uses his Fiber Master Quirk to entertain the audience by decking various heroines with dresses.

However, the event is interrupted when the the Tokyo Sky Egg is attacked by creatures known as Bombers sent by the villain Number 6. The villain wants to kill Captain Celebrity, and for this he planned the attack carefully. He orders one of his bombers to self-destruct to seriously damage the building, forcing Captain Celebrity to hold it to prevent its collapse, but leaving him defenseless against the attack of the creatures.. He also makes another creature cut off communications with the outside.

In one of the rooms of the Sky Egg, the heroes and show staff discuss the situation. Best Jeanist deduces that everything that is happening is the result of a meticulous plan that seeks to seal them all in the building. He decides that the best option is for the show staff and a group of heroes to look after the civilians without telling them the truth about what is happening to avoid panic. Meanwhile, another group will go outside to face the creatures.

Thanks to Koichi was protecting Captain Celebrity, the heroes manage to arrive in time to help. With the help of Edgeshot, Best Jeanist manages to capture the last bomber with his Fiber Master Quirk. After this, he asks Ingenium if what he requested had arrived, and then he is informed of the arrival of a truck transporting carbon fiber cables made for suspension bridges. Best Jeanist descends to the ground and uses his Quirk to manipulate the cables and secure the structure, preventing the Tokyo Sky Egg dome from falling.

In the distance, Number 6 sees that his plan is about to fail because of the heroes so, in retaliation, he orders the last Bomber to self-destruct. The Bomber frees itself form the fibers and explodes causing the building to begin to crumble. Fortunately, All Might arrives in time and manages save everybody life.

Later, while speaking to the media, Best Jeanist praises both All Might and Captain Celebrity for helping save thousands of lives during the terrorist attack.

Vs. Hero Killer Arc
When Katsuki Bakugo chooses him for an internship, Best Jeanist introduces himself by admitting he does not like Katsuki very much. Irritated, Katsuki replies that Best Jeanist sent the offer to him. Best Jeanist says all his other recruits were well behaved unlike him. Although Best Jeanist admits that Katsuki has outstanding talent, he says the young man still needs to be taught how to display himself as a hero. Irritated Katsuki approaches Best Jeanist, forcing him to discipline Katsuki by using his Quirk to wrap him in denim.

The next day, Best Jeanist tries to teach Katsuki the value of maintaining an elegant outward appearance. Best Jeanist styles Katsuki's hair similar to his own, but it returns to its messy form shortly after.

After Hero Killer: Stain's defeat is published, Best Jeanist reminds Katsuki and all his sidekicks to remain calm and operate as they normally would. Later on, Best Jeanist takes Katsuki on patrol. He asks Katsuki why patrols are important, to which he answers that it is because they can beat up criminals on sight. Best Jeanist says this answer is wrong and that patrols help heroes maintain a strong public image. Katsuki ends up getting into a spat with young children, making Best Jeanist comment about Katsuki's pride.

Hideout Raid Arc
Following the abduction of Katsuki Bakugo, Best Jeanist is recruited by Detective Naomasa Tsukauchi. Naomasa enlists Best Jeanist to the Hideout Raid Team, a fighting force tasked with infiltrating the League of Villains hideout in Kamino Ward. Alongside Edgeshot, Endeavor, Gran Torino, Gang Orca, Tiger, Mt. Lady, Kamui Woods and All Might, Best Jeanist attends a strategy meeting to rescue Katsuki Bakugo from the villains.

The Hideout Raid mission commences the next night. Just prior to the mission, Best Jeanist reminds Endeavor that he is an alumni when the latter complains about participating. Best Jeanist shares with everyone that he had Katsuki as an intern and worries that Katsuki's attitude might get him into trouble. Gang Orca is surprised that not even the elegant Fiber Hero could get through to him.

Best Jeanist leads the second squad to the Nomu production factory. Gang Orca and Mt. Lady help him successfully secure all of the Nomu. Best Jeanist restrains the majority of them with denim strings using his Quirk. Mt. Lady complains about the simplicity of their task, but Best Jeanist explains that the difficulty of the task doesn't take away from its importance. The hideout team is interrupted when a shadowy figure appears from the dark and Best Jeanist quickly restrains the man by tightening the fibers of his clothes. Mt. Lady expresses concern for the man but Best Jeanist states he cannot give the villains any slack. The villain frees himself and aims a large explosion at Best Jeanist and the squad.

Best Jeanist manipulates his allies' clothes and pulls them out of danger. He takes the brunt of the evildoer's blast and lies injured on the ground. The man levitates towards the Fiber Hero and commends his efforts to protect the other heroes. Best Jeanist recognizes the man as the leader of the League of Villains. He knows that this man's strength is comparable to All Might's, but believes that is no excuse not to act. Best Jeanist attacks, but is easily countered and crushed by an air cannon from All For One.

Defeated, Best Jeanist falls unconscious. He's later rescued when All Might, Endeavor, Edgeshot, and Kamui Woods arrive to defeat All For One.

Pro Hero Arc
In the second annual Hero Billboard Chart JP of the year, Best Jeanist is absent, as the announcer reveals he is taking a rest from his duties as a Hero for an extended amount of time. It is also revealed he has climbed to from No. 4 to the No. 3 spot due to his participation in the Kamino Ward Hideout Raid.

Meta Liberation Army Arc
At some point prior to the Revival Celebration, Best Jeanist meets with Hawks, and discuss about his health. Best Jeanist reveals he had lost a lung during the Kamino Incident, and not even Recovery Girl's help can recover the missing organ. However, this loss does not make him give up his plans of returning to the public eye.

Hawks responds how unfortunate things have turned out before brandishing one of his blade feathers at Best Jeanist. Later, it is revealed that Best Jeanist has gone missing, and that his sidekicks haven't heard from him in some time.

Endeavor Agency Arc
With second Hero Work-Studies about to begin, Eijiro asks Katsuki if he is heading back to Best Jeanist, to which he replies that he still does not know since Best Jeanist is still missing. He remembers when he did his Hero Agency Internship with him.

At that time, while Best Jeanist was combing his hair, he asked him about his hero name. Katsuki tells him that all the names he had chosen had been rejected. Best Jeanist tells him that an alias represents what he wants to be and what he ought to be, so he asks him that when he become a second-year student and received his provisional license, return to him and tells him his name.

Katsuki has already decided on a hero name, but he hasn't told anyone yet.