Yawara!

Synopsis

Matsuda the sports reporter, who has been relegated to writing about scandals, encounters a mystery girl who takes down a thief with a judo move in public and tries to track her (Yawara) down. Kamoda, the photographer partner of Matsuda, was only able to take a photograph of a faceless girl in white panties throwing the thief. After Jigoro (Yawara's grandfather) finds out that Yawara has a crush on the school idol, Nishikimori, he spreads rumors about Nishikimori to a gang of school ruffians, leading them to track him down for a beat-down. Nishikimori runs away and meets Matsuda, and the gang beats up Mastuda, who tries to defend the cowardly Nishikimori. Yawara comes to their rescue, but afterwards Nishikimori runs away every time he sees Yawara because he has been traumatized by the encounter and is afraid of her.

(Source: Wikipedia)