Stein lets Black Star undergo special training to control Tsubaki's Demon Blade form. Maka also wants training to become stronger, but she needs something more before she can do so. Meanwhile, Medusa is having a run-in with two other witches, Eruka Frog and Mizune, who do not like her staying at the Shibusen. Medusa, after stating her plans, reveals to them that she previously had implanted magic snakes in their bodies and easily kills Mizune. Eruka manages to escape after Maka and her friends appear to investigate. After realizing that she must overcome her fears of having Soul hurt, Maka tells Stein that she finally discovered what she lacks. Eruka is tracked down by Medusa, who orders her to infiltrate the witches prison and release a dangerous convict from there.