Geum Jan-di from "Boys Over Flowers" is an optimistic and brave character who stands up against bullying, remains stubbornly determined in the face of challenges, and is known for her kind-hearted and hardworking nature.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...