Tokyo Zombie (2005)

Two Japanese friends accidentally kill their boss and dump his remains in Black Fuji, a mountain/landfill hybrid. This leads to poor results when the chemicals of the landfill mix with the corpse (and many other corpses) to give rise to a zombie infestation in Tokyo.
Sakichi Satô
Tadanobu Asano, Erika Okuda, Arata Furuta, Sho Aikawa, Masaki Miura, Yoshiyuki Morishita, Yasuhi Nakamura, Maria Takagi, Kazuo Umezu, Mitsuki Tanimura, Harumi Sone, Taishin Ohtsuka, Takuya Kakuta, Kazuya Kakuta, Satoshi Hashimoto, Hina Matsuoka, Kenji Tsuchiya, Jun’ya Aso, Takako Noda, Akiko Misaizu, Kikue Umimoto, Miki Hayashida, Hideki Yoshikawa, Takahiro Togawa, Kenichi Abe, Yûji Aikawa, Keijiro Matsushima, Manabu Yazaki, Shirô Katô, Masahiro Nishikawa, Setchin Kawaya, Kagetora Miura, Arata Takase, Shôhei Uno, Masanori Fujita, Yuuya Matsuura, Shinji Rokkaku, Takashi Kakizawa, Masao Taniguchi, Sugie Watanabe, Sanae Miyata, Hisashi Murakami, Akiko Hoshino, Hiroshi Yamamoto, Tadao Tashiro, Yûta Sone, Keisuke Shibuya, Shirô Namiki, Satoru Jitsunashi, Konatsu, Noriko Eguchi, Daikichi Sugawara, Mitsuyo Ishigaki, Eisaku Obayashi, Masayuki Watabe, Yuuki Hibino, Kaori Sawaya, Keiko Sasai, Katsuyoshi Toya, Takeo Omi, Emi Fukasawa, Yoshinobu Shigemura, Ryo Kawamoto, Daisuke Takahashi, Yuuko Kumagai, Yusaku Hanakuma
tt0451954