Keisei Tominaga Bio
Keisei Tominaga is a Japanese professional basketball player for the Levanga Hokkaido of the B.League, the top professional league in Japan. Standing 6 ft 2 in (1.88 m) and listed at 178 lb (81 kg), he plays as a point guard or shooting guard. He previously played college basketball for the Nebraska Cornhuskers after spending two seasons at Ranger College, and he has represented the Japan men’s national basketball team and the national 3×3 team.
Widely known by the nickname the Japanese Steph Curry, Tominaga has built his reputation on deep shooting range and a smooth jump shot. His career arc has carried him from a standout high school career in Aichi Prefecture to junior college stardom in Texas, a major role at Nebraska, and now professional basketball back home in Japan.
Early Life and Background
Keisei Tominaga was born on February 1, 2001, in Moriyama-ku, Nagoya, Aichi, Japan. He grew up in a family with deep ties to the sport, as both of his parents had experience in organized basketball. His father, Hiroyuki Tominaga, was a 6 ft 11 in center who played professionally for Mitsubishi Electric from 1996 to 2006 and was a member of the Japanese national team that competed at the 1998 FIBA World Championship. His mother, Hitomi, played for the women’s team of Mitsubishi Electric in the industrial league, and Tominaga also has one younger sister, Chihiro.
He attended Sakuragaoka Gakuen High School in Toyohashi, Aichi, where he played for the school basketball team. As a senior, Tominaga averaged 39.8 points per game at the All-Japan Championship, an annual national high school tournament. During the third-place game, he posted a tournament-high 46 points in a 76–65 win over Teikyo Nagaoka of Niigata Prefecture.
Path to Basketball
On November 1, 2019, Tominaga made his collegiate debut for Ranger College against Missouri State University–West Plains, scoring 19 points in a 100–84 win. Just over three weeks later, on November 16, he logged a season-high 34 points in a 110–60 victory against Victoria College. On November 28, 2019, Tominaga verbally committed to play for NCAA Division I program Nebraska, under former NBA coach Fred Hoiberg, for the 2021 class.
With Tominaga on the roster, Ranger College finished the year with a 28–3 record and earned a position in the NJCAA national tournament, although the season ended early due to the COVID-19 pandemic. The team eventually finished second in the final NJCAA national rankings. On November 11, 2020, Hoiberg announced that Tominaga had signed a National Letter of Intent to transfer to Nebraska for the next season.
Keisei Tominaga Career
Early Career (2019–2021)
As a freshman at Ranger College, Tominaga averaged 16.8 points, 2.3 rebounds, and 0.7 assists per game while shooting 54.9 percent from the field and 47.9 percent from three-point range. He earned NJCAA All-Region V Team honors, First Team All-Northern Texas Junior College Athletic Conference recognition, and the conference Freshman of the Year award. He led the conference in three-point shooting and ranked sixth in both scoring and field goal percentage.
As a sophomore, he averaged 16.3 points, 2.4 rebounds, and 1.6 assists per game while shooting 51.0 percent from the field and 48.7 percent from beyond the arc. On March 3, 2021, Tominaga scored a season-high 39 points, knocking down 11 three-pointers in a 113–102 win over Grayson College, and he set a school record for career three-pointers with 139. For his efforts, he was named Northern Texas Junior College Athletic Conference Player of the Week and was a two-time First Team All-NTJCAC selection, a NTJCAC Freshman of the Year, and a Second-team Division I NJCAA All-American.
Nebraska Breakthrough (2021–2024)
Tominaga transferred to the University of Nebraska–Lincoln on a full scholarship and made his debut on November 9, 2021, against Western Illinois, finishing with three points, one rebound, and three steals across 18 minutes of play in a 75–74 loss. On November 27, 2021, he posted a season-high 23 points on 8-of-11 shooting from the field and 5-of-6 from three, along with two assists and two steals in an 83–70 win over South Dakota.
As a junior, Tominaga averaged 13.1 points, 1.3 rebounds, 0.7 assists, and 0.6 steals per game, earning All-Big Ten honorable mention. From February 1, 2023, through the end of the season, his average of 20.3 points per game among Big Ten players trailed only Zach Edey and Trayce Jackson-Davis. After initially entering his name into the 2023 NBA draft, he announced his withdrawal on May 31, 2023, and returned for his senior season. He capped his Nebraska career by earning Second-team All-Big Ten honors from the coaches in 2024.
Levanga Hokkaido Era (2024–Present)
After going undrafted in the 2024 NBA draft, Tominaga signed with the Indiana Pacers on September 26, 2024, but was waived the next day. On October 27, 2024, he joined the Indiana Mad Ants of the NBA G League, where he competed during the 2024–25 season. On June 3, 2025, it was announced that Tominaga had signed with Levanga Hokkaido of Japan’s B.League, returning to his home country as a professional.
During his time with the Mad Ants, Tominaga earned an invitation to the 2025 NBA G League Up Next Game, a showcase for top NBA G League talent. He brings momentum from that experience into his debut professional season in Japan, where he is expected to play a featured role for Levanga Hokkaido as a perimeter scorer and lead guard.
Driving Style and Strengths
Tominaga is known primarily for his shooting ability beyond the arc and his fluid jump shot, traits that have drawn frequent comparisons to NBA guard Stephen Curry. He has shot better than 47 percent from three-point range at multiple levels of competition, demonstrating consistent efficiency from long distance. While his perimeter game is his calling card, he has also shown the ability to create off the dribble and score from multiple spots on the floor.
Notable Events and Milestones
Among his signature moments, Tominaga’s 46-point performance in the All-Japan Championship third-place game stands out, along with his 39-point, 11-three-pointer explosion against Grayson College. He also delivered a game-high 33 points against Australia in the 2022 FIBA Asia Cup quarterfinals and a 33-point effort against Bahrain at the 2018 FIBA Under-18 Asian Championship. He represented Japan in 3×3 basketball at the 2020 Summer Olympics, becoming the youngest player to represent Japan in that discipline.
Keisei Tominaga Career Wins
Tominaga’s career win totals include team championships and tournament placements rather than individual major titles. His clubs have reached the NJCAA national tournament and the Final Four of the NJCAA Division I Championship, while individually he has collected multiple all-conference and all-american honors.
Nebraska Cornhuskers Highlights
With Tominaga playing a featured role, Nebraska reached the postseason and he earned Second-team All-Big Ten recognition from the coaches in 2024. His late-season scoring surge as a junior placed him among the most efficient scorers in the Big Ten during the final stretch of the conference schedule.
Other Wins and Performances
Tominaga’s two seasons at Ranger College included a run to the Final Four of the NJCAA Division I Championship and a program-best 28–3 record in his freshman year. Internationally, he represented Japan at the 2020 Summer Olympics in 3×3 basketball, helping the team reach the Olympic stage and finishing fourth in scoring at the tournament.
Keisei Tominaga Family
Family Background and Racing Lineage
Tominaga’s basketball roots run deep on both sides of his family. His father, Hiroyuki Tominaga, played professional basketball for Mitsubishi Electric from 1996 to 2006 and represented Japan at the 1998 FIBA World Championship. His mother, Hitomi, also played for the women’s team of Mitsubishi Electric in Japan’s industrial league. Tominaga also has one younger sister, Chihiro.
Personal Life
Keisei Tominaga continues to focus on his professional basketball career, having returned to Japan in 2025 to play for Levanga Hokkaido. He is widely recognized by the nickname the Japanese Steph Curry, a nod to his deep shooting range and scoring style.
2025 Season Performance
Tominaga enters the 2025–26 B.League season as one of the most anticipated signings in the league, joining Levanga Hokkaido after a year developing with the Indiana Mad Ants. His NBA G League experience and Olympic-level international résumé have positioned him as a perimeter leader for a Hokkaido team looking to climb the standings.
Early in his debut campaign, Tominaga is expected to serve as a primary scoring option and secondary playmaker, with the B.League providing a familiar stage for a player who previously starred in Japan’s national high school championships. Levanga Hokkaido’s coaching staff has indicated he will play significant minutes as both a point guard and shooting guard.
The outlook for Tominaga in 2025 centers on translating his elite shooting touch to the professional ranks in Japan, building team chemistry with new teammates, and helping Levanga Hokkaido contend for a playoff position. Continued involvement with the Japan national team program also remains a possibility as he competes at the B.League level.