
Slam Dunk has the Sannoh Industry Affiliated High School basketball team.Their loss in the year before the storyline was not because of a better team, but because the commander of their flag tank abandoned her position to save a friendly tank that had fallen into a river.

They have been the defending national champions for three years running and are ranked as an AA team. To give an idea of how powerful they are, the year prior to the start of the story they defeated Kainan, who are Kanagawa's top team for 16 years straight, by 30 points of difference, and since their current senior players joined, they haven't lost a single game. Kazu from Air Gear was already getting some serious badass cred from his fight with Sleipnir, but he finally proves, once and for all, that he's no longer the little bitch who needs Ikki to fight for him when he takes out Nike, a ridiculously powerful Hero Killer who's never lost a fight.Shohoku faces them in the second round of the nationals barely winning by one point in the last second. Attack on Titan: Eren manages this during the battle with Reiner.Assassination Classroom: Half of the plot is that Korosensei is determined to cultivate Kunigigaoka's E Class, the class of outcasts and ne'er-do-wells, into students knowledgeable enough to take out the A Class, the all-stars with the highest grades, with Principal Asano's son as the school's #1 student.Sure, he had help, but he still stood alone for most of the battle. Downplayed in Beyblade Burst, but Valt becomes the first person to Burst Spryzen in episode 15, even though he didn't win the match.At least, until he puts out a Distress Call and Bertolt falls on them. The most powerful esper in Academy City, no one has ever managed to land so much as a single blow on him.

Then Touma Kamijou comes along, manages to negate Accelerator's power, and defeats him in combat by punching his lights out. Shizuri Mugino was ranked the fourth most powerful esper in Academy City, then Shiage Hamazura, a guy with no powers at all, tricks her into blowing herself up.Touma has a tendency to do this to other people as well, all thanks to his power to nullify anything.

Demon Slayer: Kimetsu no Yaiba has the Twelve Kizuki.All thanks to his ingenuity and determination, he beats her in both rematches as well. A group of the twelve strongest demons in existence, second only to the Big Bad himself. The Twelve Kizuki are divided into the Upper and Lower Ranks, with Lower-Six being the weakest, and Upper-One being the strongest. The Lower Ranks are formidable opponents in their own right The Lower-Five, Rui, subjected the Main Character to a brutal Curb-Stomp Battle.
