Responses
Must be this one
http://www.mangago.zone/read-manga/teikoku_kyoudai/
Omg yes!! thank you(づ￣ ³￣)づ
beta
The manga is shounen no romance, about two stepbrother who are knights in this kingdom and go solving cases. There's a chapter where the big bro tranvestite and the little bro has a brother complex (the type of "I will kill anyone who dare to hurt nii-san" )