“I’m leaving.”
“Really? I’m sure the people who fought together with you in the war will miss you.”
“Nobody will remember me. ”
At the end of the war, a commoner knight, Clarence Holton, left everything behind and ran away, including the promised honor and happiness she could have received after winning the war.
But–
“Where the hell did Clarence go?”
Contrary to the expectations that no one would remember her, the imperial prince, the taciturn knight, and the genius wizard, all rose to the temple at the news that she had left. And the chase for her disappearance began.

From Asclepias Scans:

Fed up with Westernization to the detriment of native culture, Lee Dan Ah wears a traditional Korean hanbok to her first day of high school rather than the required uniform. After being scolded by the liberal-minded principal for not following school regulations, she's given an ultimatum: If she can convince 70% of the student body and faculty to accept her idea within six months, the school will consider adopting a hanbok uniform. But that's going to be harder than it sounds when she can't even scrape together five members to start a hanbok club...