Shimanoumi Koyo

Shimanoumi Koyo - 志摩ノ海航洋 (born July 11, 1989) is a Japanese professional sumo wrestler from Shima, Mie. He made his debut in July 2012 and currently wrestles for Kise stable. He reached the makuuchi division in May 2019 and has 2 special prizes. His highest rank as of 2025 is maegashira 3.

Early Life[]

Koyo Hamaguchi began sumo in elementary school and also practiced at a local sumo wrestling school.^[1] He also played baseball but chose to concentrate on sumo in his third year at Watsugu Junior High School. He was scouted by several professional sumo stables but was not recruited and chose to continue his education. He attended Meitoku Yoshitsune High School before studying Business Administration at Kinki University. He was part of the University's successful sumo team but made little impact at national level in individual competition.^[2]

Career[]

Early Career[]

After graduating from university, he entered the Kise stable to prepare for a career in professional sumo. Like most new recruits he initially used his family name as his shikona and began his career as Hamaguchi. On his debut tournament (basho) in July 2012 he won all seven of his regular matches in the jonokuchi division but lost the championship in a playoff against his stablemate Iwasaki. He was promoted to jonidan for September and replicated his previous performance as he lost the playoff to Iwasaki after winning all seven of his bouts.^[3]

Hamaguchi2013 — Hamaguchi during his time in makushita (c. 2013)

On Hamaguchi's debut in the fourth sandanme division in November 2012 he won four of his seven bouts to record a winning score or kachi-koshi. In the following tournament in January he was undefeated in seven matches to win the divisional championship (yusho) and secure promotion to the third, makushita level. Hamaguchi had winning records in his first two tournaments in makushita and in July he won two of his first three matches before losing to Chiyomaru. In the latter bout he sustained a serious injury to the anterior cruciate ligament and was forced to withdraw from the tournament.^[4] The injury was so severe that Hamaguchi was forced to sit out the next five basho and was relegated back to the lowest division.^[3]

In July 2014 Hamaguchi returned in the jonokuchi division and took the championship with a 7-0 record. Two months later he went undefeated in jonidan to win his second successive yusho. A 6-1 result in sandanme saw him promoted back to makushita in January 2015. He quickly established himself in the upper ranks of the division and in January 2016 he was narrowly denied a yusho when he was beaten in a play-off by his stablemate Ura. Winning records in the next two tournaments saw him promoted to the second juryo division for the first time for the July 2016 tournament. On his promotion he adopted the shikona Shimanoumi, which combines the name of his home town with the kanji for sea or ocean.^[3]

Juryo Career[]

Shimanoumi's first appearance in juryo ended in failure as he won only four of his fifteen matches and was relegated back to makushita. Competing towards the top of the third division for the rest of 2016 and throughout 2017 he performed consistently before a 5-2 result in January 2018 secured his second promotion to juryo.^[3]

He had mixed results in his next five tournaments and for the January 2019 basho he was ranked at juryo 13. Shimanoumi dominated the tournament, winning the yusho with a 13-2 record which included wins over Arawashi, Toyonoshima, Sokokurai, Ishiura, Takekaze and Chiyomaru. His success was not enough to secure promotion to the top makuuchi division but did see him ranked at juryo 1 in March. Needing only eight wins for promotion Shimanoumi exceeded his target as he repeated his 13-2 result from January and became the first wrestler since Tochinoshin in 2014 to win back-to-back juryo championships. His defeated opponents included Daishomaru, Kotoyuki, Daiamami, Kyokutaisei and Yutakayama.^[3]

Makuuchi Career[]

20201120-OHT1I50119-T — Shimanoumi prepares for his upcoming match (c. 2020)

Shimanoumi made his first appearance in the top division in May 2019 at the rank of maegashira 12. He struggled early in the tournament winning only two of his first six matches and by the end of day 9 he had a record of 4-5. In the second week of the basho he showed considerable improvement and won his last six bouts including wins over Yoshikaze, Kotoeko and Takarafuji. His 10-5 record saw him awarded the special prize for fighting spirit. SHimanoumi was promoted to maegashira 6 for the July 2019 tournament where he recorded an 8-7 result, securing his kachi-koshi with an uwatedashinage win over Aoiyama on day 14.^[3]

He then found life in makuuchi more difficult, recording only one kachi-koshi in the next six tournaments, and he had fallen to the very bottom of the division at maegashira 17 by November 2020. He responded by mounting a challenge for the championship, sharing the lead with ozeki Takakeisho with just a single loss after Day 12. He lost his final three matches to finish with an 11–4 record, but he received his second Fighting Spirit prize.^[3]

Having been relegated to the juryo division, Shimanoumi wrestled in this division for the whole of 2023. At the November tournament of that year, he faced Mitoryu in a match that lasted a total of 5 minutes and 57 seconds and was notably marked by a rare mizu-iri (water break), the first in the juryo division in 24 years.^[5]

Personal Life[]

Shimanoumi was the first sekitori from Shima, Mie Prefecture, and his juryo promotion was announced the day before the 42nd G7 summit which was also held in Shima, Mie Prefecture. On June 15, 2016, Shimanoumi personally gave the mayor of Shima a phone call to report his juryo promotion.^[1]
Shimanoumi's favorite manga is JoJo's Bizarre Adventure and his favorite band is Back Number.^[6] His favorite food is meat and he dislikes sushi.^[2] His hobby is weight training. Shimanoumi's target wrestler is Musoyama and Kotoshogiku. He considers Hidenoumi to be his rival.^[2]
In December 2021 he announced his engagement to Chihana Amasaki, a former Takarazuka Revue singer and the eldest daughter of the late former sekiwake (and former head of the Izutsu stable) Sakahoko.^[7] They were married on 19 June 2022.^[8] The next month Shimanoumi changed his legal surname to Fukuzono.^[9]

Fighting Style[]

Shimanoumi has shown a preference for tsuki and oshi techniques which involve pushing and thrusting rather than grasping his opponent's mawashi or belt. His most common kimarite or winning move is oshidashi, the push-out.^[10]