Gals manga

GALS! summary:

Self-styled Kogal queen Kotobuki Ran and her friends just wanna have fun, which includes shopping, hanging out, and scamming meals off gullible guys. Unfortunately, their 'hood' — Shibuya — is in constant danger of being despoiled by dirty old men, street gangs, nasty Kogal rivals, and other societal evils. But with a little help from her friends and a toughness born of coming from a family full of cops, Ran takes on the bad guys (and gals) with gusto!