Black☆Star Part in the Story-Remedial Lesson

Black Star and Tsubaki try to sneak up on Soul and Maka as they enter the Death Room after all four of them had been called there by Shinigami. However, his loud voice gives him away again, to Tsubaki's dismay.

The four meet up with Shinigami, who tells them that he is giving them extra lessons, much to the protest of Maka and Soul, since they all have collected no souls at all recently. Black Star does not seem to mind this much, laughing cheerfully. Shinigami thus gives them a mission in order to defeat Sid Barett, their missing former teacher who was rumoured to have died and come back as a zombie terrorising the other students (apparently the rumour is true) and trying to get them to experience the freedom from the fear of dying. He also says that there is also the person who turned Sid into a zombie to consider. Black Star eagerly accepts the mission. Shinigami then adds that if they fail this mission, they will be expelled.

Everyone else is distraught about the threat of being expelled apart from Black Star, whom Tsubaki tries to get to take the mission seriously. The four decide to go to Hook Cemetery, where Sid's grave is. Black Star however, does not take anything seriously, and jokingly suggests that they urinate on Sid's grave, which Soul heartily agrees to.

However, at that moment, Sid attacks Maka, but Soul manages to save her before she is harmed. Sid picks up his gravestone and begins using it as a weapon. He proves to be a formidable opponent, and Black Star ends up having to defend Maka at some points, and soon ends up taking a hard blow from Sid's Living End attack. Angered that he has been hit, Black Star manages to retaliate with a kick to Sid's solar plexus, which causes the teacher to be impressed at his skills.

Maka and Soul tries to engage in a Soul Resonance and use Witch-Hunt Slash on Sid, but end up failing and almost hit Black Star instead. As they try to hit Sid, the zombie buries itself underground, appearing only to attack and disappear again. Realizing that Sid is following the Way of the Assassination, Black Star deems that there can only be one assassin on the field: himself. He manages to use Trap☆Star to catch Sid, but ends up catching Maka and Soul in the process.

The four then interrogate Sid as to who turned him into a zombie, and on his whereabouts. Black Star manages to coax Sid into saying that it was Franken Stein that had turned him into a zombie by flipping Tsubaki's skirt. Soul, determined not to lose, flips Maka's skirt as well, which amusingly provokes no reaction from Sid. Maka uses Maka Chop on the boys and Sid, which manages to have Sid tell him that Stein is in Patchwork lab, a place on the outskirts of Death City.

The students, with Tsubaki holding Sid captive, go to the laboratory, and meet with Stein, who makes a rather bizarre entrance by falling out of the building on his chair. However, he proves to be an amazing fighter, being able to use Soul Perception in order to analyse his opponents beforehand, and he takes out Black Star easily whilst still seated on his chair. Maka and Soul proceed to attack, but Stein manages to disarm Maka and prepares to start dissecting her. However, Black Star manages to get him to let go by using his Certain Kill: Black☆Star Big Wave. But he is surprised as the attack does no effect to him. Stein explains that as he had seen Black Star's soul and Soul Wavelength, he had been able to change his own Wavelength to match Black Star's, therefore Resonating with him and making Blakc Star's Wavelength attack useless. He then attacks Black Star with his own Wavelength, which causes him to lose consciousness in a pool of blood.

His friends deem him to be dead, and Soul and Maka, the latter regaining her courage to fight Stein, manage to engage in a successful Witch-Hunt Slash. However, Stein still manages to defeat them. When it appears all is lost, Stein and Sid reveal that all of this is just a part of the extra lesson planned by Shinigami. Soul protests that he had still killed Black Star, but the Meister then regains consciousness.

The next day, the four students are in class, when Stein, much to Soul and Maka's shock, appears and tells them that he is now their new teacher. Black Star merely makes a grumpy remark that Stein is standing out more than him.