Soul Eater, Vol. 13 continues where the previous tankōbon left off and contains the next four chapters (49–52) of the on-going manga series.
Black Star begins to fight Mifune, and due to the training he had at Tsubaki Nakatsukasa's home, he is able to fully use Tsubaki's demon sword ability and fights Mifune evenly.
Meanwhile, inside the castle, Ox Ford battles Kim Diehl, and attempts to convince her of his devotion to her. He manages to overcome the morality machine by ripping off his own cherished hair spikes – a physical feature of his that Kim dislikes and relents by the move of this act.
Elsewhere, Death the Kid and Free encounter Mosquito, who transforms into his strongest form to fight both of them.
This tankōbon is written and illustrated by Atsushi Ōkubo. It centers mainly on the infiltration of Baba Yaga's castle – the headquarters for Arachnophobia. Outside, Black Star battles Mifune, however this time with her training their match is rather even. Inside, Ox Ford manages to convince Kim Diehl of his devotion to her and manages to override the Mortality Machine, which has lowered Kim Diehl's morality.
All in all, Soul Eater, Vol. 13 is a wonderful continuation to a series that seems really intriguing and I can't wait to read more.