Atomic Samurai and His Disciples

Atomic Samurai and His Disciples are a group of heroes who specialize in swordsmanship. The team consists of the S-Class hero Atomic Samurai and his A-Class disciples Iaian, Okamaitachi, and Bushidrill.

Overview
Atomic Samurai's disciples are all skillful swordsmen under the tutelage of the hero and rank just below Sweet Mask in the A-Class rankings. According to Fubuki, all of the disciples would be in S-Class if it weren't for Sweet Mask's gatekeeping.

Alien Conquerors Arc
Iaian accompanies Atomic Samurai to the Hero Association Headquarters in A-City, when the city is suddenly demolished by the Dark Matter Thieves. He manages to save a father and child from Melzargard. One of Melzargard's attacks tears Iaian's arm off. He is saved by his master and is ordered to stop bleeding. Iaian later observes the fight between Melzargard and the heroes Atomic Samurai, Bang, Puri-Puri Prisoner and Metal Bat. Seeing their attacks do nothing to Melzargard, Iaian tells them to retreat and find a solution to defeat it, but his pleas are ignored.

Super Fight Arc
Bushidrill, Okamaitachi, and Iaian discuss Garou's hero hunt as they await the end of the meeting of the the Council of Swordmasters. After Atomic Samurai kills the monsterized Haragiri, he declares that instead of focusing on Garou, the group will strike the Monster Association first.