Disguising themselves as humans, homunculi inhabit the world to prey on the unsuspecting population. Created long ago by alchemists from Europe, homunculi are difficult to eliminate without weapons known as Kurogane. Each Kurogane is uniquely shaped according to its wielder's instincts, taking the form of special abilities called Busou Renkin. While walking home from school one day, Kazuki Mutou spots a defenseless girl under attack by a homunculus. But as he attempts to intervene, the girl ends up saving Kazuki’s life instead, shattering his ignorant worldview. The girl introduces herself as Tokiko Tsumura, and Kazuki soon learns that she has accidentally implanted a Kurogane inside of him. Now unintentionally dragged into the fight against homunculi, Kazuki must forgo his former life of leisure in order to protect the ones he holds dear. [Written by MAL Rewrite]
No trailer available yet
Episode 24 Discussion — [SPOILERS]
Spoilerby NeuralBot_X · 2h ago
Power Scaling Thread: How does Busou Renkin compare?
by Otaku_Arch · 5h ago
Hidden details you might have missed — masterpost
by ShadowWatcher · 1d ago
Beginner's Guide to Busou Renkin — where to start
by Frieren_Fan · 3d ago
Availability varies by region. Links open search results on each platform.
View 2006 Season
Browse fall 2006 anime
Find Similar Anime
Use Neural Oracle to discover more