Obatalian

"The pejorative word obatalian is a pun between the Japanese word obaasan (old lady) and the English word battalion. Obatalian are known to always enter a train running as fast as they can, bumping others people in order to catch a free seat before the others. They haggle things that aren't normally haggled like grocery store produce. They are fearless and pitiless, just like a battalion of barbarians. This anime is follows 6 stories of one such Obatalian and her wake of destruction."

Source: MAL and kabuki21.com