Lady Equation

Plot: Marino ran away from home, for her aunt tried to make her marry a strange man. She had lost her parent eleven years before. As she left home uncertain where to go, she traced back in memory, and she arrived at a men's dormitory.

From Manhua-Revolution:
Marino, a 15 year old girl runs away from home due to an arranged marriage, finds her self in a male dormitory by accident, there she meets...