Hyeja
Hyeja was the first priest who came across the sea from Goguryeo to Japan in the Asuka period, 595. He was a tutor of Buddhism to Shōtoku Taishi.
He propagated Buddhism in Japan. He lived at Hōkō-ji, currently Ango-in or Asuka-dera, with priest Esō who came from Baekje. They were called "Sanpō no Tōryō".
In 615, he went back to the home country, Goguryeo, with an annotated book of the Buddhist scriptures, which was written by Shōtoku Taishi.
He heard the news that Shōtoku Taishi died on February 22, 622. He grieved very much and took an oath of meeting Shōtoku Taishi again in the Pure Land on the same day of next year. He achieved an oath.
