"Crazy girl Shin Bia" is a manhwa I personally read in korean. I dont think this matters whether you read it in english or korean.
The story line is fantastic, it diplays a contrast with the modern world vs ancient era. "Bia" is a highschool girl who is very tough, good at fighting, is lazy, a moneylover yet beautiful. If you like a strong female lead, this is right for you.
The story starts off as a "real life highschool concept" however as the story progresses, a touch of fantasy is seen. The modern day "Bia" is chased and is in a life threatening situation as the "ancient day Bia" dies, modern day bia is brought to the ancient world.
If you've seen the korean drama or read the manhwa "goong/ Palace", this is the right manhwa for you. I personally love "hwang mi ri" (the authors)'s art and drawings, if you've loved this authors other published manhwas, this is no different.