Onigahara is a short-lived antagonist of the Lab Arc, serving as the boss of the B4 division. Reworked into a cyborg under Kashima's hand, he meets his end within that storyline.
Onigahara cuts an imposing figure, a tall man whose hair is combed back and whose face sits behind a mask. Kashima's tampering left him rebuilt as a cyborg, his body altered well beyond its human origins.
A quick fuse defines what little is shown of him, marking Onigahara as an easily angered sort.

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Onigahara is a short-lived antagonist of the Lab Arc in Sakamoto Days, serving as the boss of the B4 division. He is reworked into a cyborg under Kashima's hand and meets his end within that storyline.
Onigahara is a tall, imposing man with hair combed back and a mask covering his face. After Kashima's tampering, his body is rebuilt as a cyborg, altered well beyond its human origins.
Little is shown of Onigahara's personality beyond a quick fuse, marking him as an easily angered character.
Kashima is responsible for reworking Onigahara into a cyborg during the Lab Arc.
No, Onigahara does not survive the Lab Arc. His role as the boss of the B4 division proves brief, and he dies within that storyline.
Looking for more on Onigahara? The Sakamoto Days Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the Sakamoto Days anime series, manga, and official materials. Sakamoto Days was created by Yuto Suzuki, published by Shueisha, and animated by TMS Entertainment. All rights to Sakamoto Days and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
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