Koi Wataru, Hanatachibana no Koro

Yoshitaka, the oldest son of lord Minamoto no Yoshinaka, resides in Kiso with his servant and childhood friend, Kotarou. While Kotarou is in love with him, Yoshitaka admires his uncle, shogun Minamoto no Yoritomo in Kamakura. In the midst of heightened tension between the Minamoto clan in Kamakura and Kiso, it was decided that Yoshitaka will go to Kamakura to be the husband of Yoritomo's daughter... (Source: Leed, translated)