Koshoji Temple is a historic head temple of Nichiren Buddhism located in Tsutsujigaoka, Miyagino Ward, Sendai City, Miyagi Prefecture. The temple’s mountain name is Komeizan, and its history is traditionally traced back to 1295, when Nichiren’s disciple Nichimon founded the temple.
Originally known as Daisenji, the temple was later renamed Zenshoji before eventually becoming Koshoji during the Edo period. Today, it is known as the only Nichiren Buddhist head temple in the Tohoku region and has maintained a close connection with the Date clan and the history of Sendai.
The temple is also an interesting destination for visitors who want to explore the relationship between Japanese Buddhism and the ruling families of the Edo period. Several buildings and graves within the grounds preserve stories associated with the Date family.
The present name Koshoji is connected to Furi-hime, the wife of Date Tadamune, the second lord of the Sendai Domain. Her Buddhist posthumous name was Kosho-in, which later became the origin of the temple’s current name.
Furi-hime became a devoted follower of Koshoji, strengthening the temple’s relationship with the Date family. This connection played an important role in the temple’s development during the Edo period.
In 1649, a major fire destroyed the temple complex. The buildings were subsequently reconstructed on a large scale under the orders of Date Tadamune.
Furi-hime died in 1659 and was buried at the temple. Following her death, the third lord of the Sendai Domain, Date Tsunamune, changed the temple’s name to Koshoji in honor of her Buddhist name.
Another important figure in the temple’s history is Misawa Hatsuko, a concubine of Date Tsunamune and the mother of the fourth lord of the Sendai Domain, Date Tsunamura.
Hatsuko was also a devoted follower of Koshoji. In 1661, the temple was expanded and received an estate equivalent to 500 koku of rice-producing land, reflecting its strong ties to the ruling family.
Misawa Hatsuko is traditionally regarded as the historical model for Masaoka, a famous character in the kabuki play Meiboku Sendai Hagi. Her grave at Koshoji is therefore commonly known as “Masaoka’s Grave.”
For visitors interested in Japanese theater and history, this connection provides another fascinating link between the temple and the cultural traditions of the Edo period.
One of the most historically significant features of Koshoji is its main gate, which is traditionally said to have been relocated from Sendai Castle during the Kaei era in the mid-19th century.
The gate has a three-bay, one-entrance design with a gabled roof covered in traditional ceramic tiles. Large shachi, ornamental roof decorations shaped like mythical tiger-headed fish, stand at both ends of the ridge.
As a surviving structure associated with Sendai Castle, the gate offers visitors a tangible connection to the architectural heritage of the Date clan and the former Sendai Domain.
Shakado Hall was originally built in 1695 by the fourth lord of the Sendai Domain, Date Tsunamura. It was constructed as a Buddhist worship hall dedicated to praying for the peaceful repose of his mother, Misawa Hatsuko.
The hall was originally built in Tsutsujigaoka and was later relocated to the present grounds of Koshoji in 1973. The building has a square three-bay layout and a distinctive Hōgyō-zukuri pyramidal roof.
Inside the sanctuary is a Buddhist image of Shakyamuni Buddha, the historical Buddha. Shakado Hall is registered as a tangible cultural property of Sendai City.
Restoration work on the hall was completed in 2023, helping preserve this important historic structure for future generations.
The temple grounds are also home to a magnificent five-story pagoda, completed in 2003.
Standing approximately 31.9 meters high, the pagoda creates an impressive vertical landmark within the temple grounds. Its traditional form harmonizes with the surrounding landscape and takes on a different appearance as the seasons change.
The grounds of Koshoji contain the graves of Furi-hime and Misawa Hatsuko, providing visitors with a direct connection to important figures in the history of the Sendai Domain.
During the Edo period, Koshoji was a major religious institution with more than 100 Buddhist monks and numerous affiliated temples and sub-temples.
Three affiliated temples, Myo’on-in, Horin-in, and Renko-in, still stand next to Koshoji today, reflecting the temple’s long-standing role as an important center of Nichiren Buddhism in the region.
1295: Nichimon, a disciple of Nichiren, is traditionally said to have founded Daisenji.
1649: The temple complex was destroyed by fire and subsequently rebuilt on a large scale under the orders of Date Tadamune.
1659: Furi-hime died and was buried at the temple. The temple was renamed Koshoji after her Buddhist posthumous name.
1695: Date Tsunamura built Shakado Hall to pray for the repose of his mother, Misawa Hatsuko.
1973: Shakado Hall was relocated to the present temple grounds.
2003: The 31.9-meter-high five-story pagoda was completed.
2023: Restoration work on Shakado Hall was completed.
From Tsutsujigaoka Station on the JR Senseki Line, it is approximately a 4-minute walk to the temple’s rear gate, or East Gate.
From Miyagino-dori Station on the Sendai Subway Tozai Line, the temple’s main entrance, or West Gate, is approximately a 4-minute walk away.
For travelers arriving by train, Koshoji can also be reached on foot from the East Exit of JR Sendai Station. The walk to the temple’s main entrance takes approximately 8 minutes.
Koshoji Temple offers a unique opportunity to explore the history of Sendai through the connection between Nichiren Buddhism and the Date clan.
The historic gate associated with Sendai Castle, the beautifully restored Shakado Hall, and the impressive five-story pagoda are among the temple’s architectural highlights. The graves of Furi-hime and Misawa Hatsuko also preserve personal stories connected with the ruling family of the Sendai Domain.
For visitors from outside Japan, Koshoji is especially interesting because its history goes beyond religious architecture. The temple provides insight into the relationships among Buddhism, samurai society, feudal lords, Japanese theater, and the development of Sendai.
Located within easy walking distance of major railway and subway stations, Koshoji is also convenient to include in a sightseeing itinerary around central Sendai. A walk through its grounds offers a chance to discover a quieter historical side of the city while experiencing more than seven centuries of Buddhist heritage.