Across the Nightingale Floor (Tales of the Otori #1)

Holly says: "First published in 2002, this series might be considered a young adult romantic fantasy on today’s bookshelves. When sixteen-year-old Takeo’s family is killed, he is rescued and adopted by a warring clan leader and raised as a warrior. Along the way, he is trained in magical skills, falls in love, and seeks to avenge those he’s lost. Set in a fictional world but based on Japan in the Sengoku period, this trilogy expanded to a total of five books as well as a spinoff series in 2020."