Ep. 13: The Man with the Magic Eye: Soul and Maka's Diverging Soul Wavelength?

Maka and Soul undergo a special training session under Stein by pointing out each other's flaws under the effects of emotional stimulants, which leads to an argument between the two that threatens to permanently prevent their souls from resonating with each other. The two later take a supplementary class in London with Black Star and Tsubaki where they encounter Free, the immortal werewolf with the magic eye who Eruka had released from Witch Prison on Medusa's behalf. During their battle with Free on a suspension bridge, Black Star quickly passes out after using Tsubaki's Enchanted Sword mode, leaving Maka and Soul to fight alone. However, their soul wavelengths have already diverged to the point where Soul burns Maka's hands in his weapon form, making him unwieldy. The two begin to bicker again until Tsubaki persuades them to set their differences aside and accept each other, allowing their souls to resonate stronger than ever, though it causes the madness of Soul's black blood to intensify and risk consuming Maka's soul. Nevertheless, Maka is able to use her Witch Hunter against Free and, with aid from the newly revived Black Star, force him off the bridge. After the battle, Maka coughs up black blood into her hand. (Source: Wikipedia)

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