Stray Cat Rock: Delinquent Girl Boss

Nora-Neko Rokku: Onna Bancho 女番長野良猫ロック

Director: Yasuharu Hasebe 長谷部安春
Released: May 2, 1970
Distributor: Nikkatsu
Screenplay: Shuichi Nagahara 永原秀一

Starring:
Meiko Kaji 梶芽衣子 as Mei
Akiko Wada 和田 アキ子 as Ako
Kōji Wada 和田浩治 as Michio Yagami
Bunjaku Han 范文雀 as Yuriko
Yuka Kemari 久万里由香 as Mari
Hanako Tokachi 十勝花子 as Hanako
Yuko Shimazu 島津ゆう子 as Yuko
Yuka Ohashi 大橋由香 as Yuka
Miki Yanagi 柳美樹 as Miki
Toshimitsu Shima 島敏光 as Maabō
Susumu Fujita 富田ジョージ as Hiroshi
Tatsuya Fuji 藤竜也 as Katsuya

Info:

The first of five Stray Cat Rock films.

Also known as Alleycat Rock: Female Boss and Female Juvenile Delinquent Leader: Alleycat Rock

Plot:

Tough girl biker Ako (pop singer Akiko Wada) comes across Mei (Meiko Kaji) and her girl gang (the Alleycats/Stray Cats) as they are about to have a knife fight in Shinjuku, Tokyo with another gang of girls. When the second gang calls in their boyfriends for help, Ako joins in and turns the tide for Mei and her gang and becomes a leader figure for the girls. Meanwhile, Mei's boyfriend Michio (Kōji Wada) wants to join some right-wing nationalists, the Seiyu Group. To prove himself, he induces an old friend Kelly (Ken Sanders) to throw a boxing match so the Seiyu Group can cash in betting against him. But when the boxer, encouraged by Ako and Mei, wins the fight, the Seiyu Group takes their anger out on Michio until Mei and the Alleycats rescue him. But Mei and the girls are now on the run from the powerful group. Mei is eventually killed and Ako leaves Shinjuku, roaring away on her bike.

Synopsis taken from Wikipedia.