Hikaru Genji
In the celebrated Japanese work "The Tale of Genji", written by Murasaki Shikibu in the early 11th century, the title character Hikaru Genji is rejected by the lady Utsusemi in chapter 3 and instead sleeps with her young brother: "Genji pulled the boy down beside him ... Genji, for his part, or so one is informed, found the boy more attractive than his chilly sister."