OKA GUMI

OKA, Ryoichi

Yukiga-Oka

TAKATORA GUMI

YAMAMURA GUMI

TERAMOTO GUMI

TERAUCHI GUMI

Tonari-gumi

MURAKAMI GUMI

SEKINE GUMI

UEMATSU GUMI

Narabi no oka

Oka Summation, PP

Interrogation of Takazumi Oka

OKA, Takazumi. Summation PP

OKA, Takazumi. Summation PP

DAIGO GUMI (Daigo Group)

HAYASHIDA GUMI (Hayashida Group)

FUJITA GUMI (Fujita Group)

KONDO GUMI (Kondo Group)

KONISHI GUMI (Konishi Group)

KUSHIDA GUMI (Kushida Group)

ABE GUMI (Abe Group)

MORITA GUMI (Morita Group)

NOHARA GUMI (Nohara Group)