# Ko Ji-yong's Son Seung-jae Wins Five Medals at World Team Maths Cup

- URL: https://unnienote.app/en/news/ko-ji-yong-son-seung-jae-world-maths-6a6f5e
- Published: 2026-11-03T12:05:23.245Z
- Publisher: Unnie Note

> Former Sechs Kies member Ko Ji-yong's son Seung-jae won medals in five categories at the 2026 World Team Maths Cup, his mother Hur Yang-im said.

## Key points

1. Seung-jae won medals in Math Pioneers, Crossnumber, Shuttle, Relay and Group events.
2. Hur Yang-im said the team missed gold but earned several medals together.
3. The couple divorced in July, and Ko's agency has filed a provisional injunction.

## What happened?

Hur Yang-im, the former wife of Ko Ji-yong, announced that their son Seung-jae took part in the 2026 World Team Maths Cup and came home with medals in five categories. According to Hur's personal channel, Seung-jae earned medals in Math Pioneers, Crossnumber, Shuttle, Relay and Group events.

## Who are Ko Ji-yong and Seung-jae?

Ko Ji-yong is a former member of the boy group Sechs Kies, known in Korea as Sechs Kies. He married Hur Yang-im in 2013, and the couple had Seung-jae. The boy previously appeared on KBS 2TV's variety show 'Superman Returns' and was classified as a 'top 0.1% gifted child,' which drew wide attention in Korea.

## Did the team win gold?

No. Hur said the team did not reach gold, but she praised the children for working together, sharing ideas and staying committed until the end, which earned several medals.

## What about the divorce?

The couple announced their divorce in July. Afterward, Ko's agency said he filed a provisional injunction seeking to bar interference with visitation rights and to ban the posting of photos and videos of the child.

## For international fans

Sechs Kies was one of the most popular boy groups of the late 1990s in Korea. Coverage of Ko's family has focused mainly on the child's achievements and the custody dispute, and reports in Korean media are the primary source for these details.

## FAQ

### Who is Ko Ji-yong?

Ko Ji-yong is a former member of the Korean boy group Sechs Kies. He married Hur Yang-im in 2013.

### What competition did Seung-jae take part in?

Seung-jae competed in the 2026 World Team Maths Cup and won medals in five categories, according to his mother.

## Sources

- [Xportsnews](https://www.xportsnews.com/article/2214101)

_Written and translated with AI from official announcements and Korean media reports. If something is wrong, please let us know._