From Yanagawa-kibonomori-koenmae [Yanagawa Kibo no Mori Park] Station, I took a 25-minute walk to Oeda Castle site on a hill by Abukuma River.
Oeda Castle was Oeda Family, a cadet branch of Date clan from the first Castleman, Muneie Oeda, until the seventh, Munenao Oeda. Especially, Munenao is known as the samurai retainer who earned the biggest trust of Masamune Date.
The descendants of Oeda Family are, Mikio Date, a famous comedian from Sandwichman, and Sayuri Date, Mikio's niece and a voice actress of Kanon Shibuya from "LoveLive! Superstar!!" anime.
The site of Honmaru inner bailey on the hilltop is accessible to the public and is known as a cherry blossom site.