Call Me Princess

Call Me Princess (姫ってよんでねっ, Hime tte yonde ne!) is a one volume manga by Tomoko Taniguchi.

Plot
The story revolves around a teenage girl called Mako who dreams of being called a Princess by her "Prince Charming". She idolizes her brother-in-law and wants a husband just like him to call her Princess, as he calls her sister. Things get complicated when her brother-in-law's brother, Ryu, moves in with Mako's family in order to finish his last year at high school.