After combining several tribes, the Shan tribes established a large country called "Istania" assisted by the Mu tribe. after it was realized, the Mu tribe went somewhere without leaving a trace. however, when leaving. thy tribe left a promise of brotherhood delivered only to the king, if the king lit a fire in the sanctuary of thy tribe.

Korean manhwa based on a novel. Focuses on the heroine having reported a hit and run case which disrupts the family of one of the other main characters, Hui Won. In which he constantly abuses her whilst he falls in love with her alongs the way.
However, she has a boyfriend - Eun Gyu - who is the singer of an ongoing band.
Note that she is a strong girl and knows self defense herself.
*Full color, not black&white*
(Source: MU)