Action Idols

After the suspicious death of her brother, Zena Han decides to continue her training to become a top martial arts student so that she can be accepted into a clan and obtain the coveted title of action idol. She transfers to a new school and soon finds herself barreling down a path where power and truth can be uncovered.

Season 1 is complete, but season 2 went on hiatus before any chapters were done.

From the author via Google Translate:

And before we start Season 2, we will be announcing a web novel (action idol) that includes stories not covered by Eptun.