People · Japan
Kaisei Kawamura (河村海星)
3×3 · top 10.5% of 284,439 all-time · competing since June 2025 · 2025KAWA06
Kaisei Kawamura (河村海星) has been competing for a year. His best event is the 3×3: a personal-best single of 11.01, set at Katano Spring 2026, puts him in the top 10.5% of the 284,439 people who have ever been ranked in the event, and 458th in Japan. Across 4 competitions since June 2025, he has put 64 official solves on the record across five events. Solve to solve, his 3×3 times vary about 11% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 12.72 in June 2025 to 11.01, a 13% improvement. Kaisei has entered four competitions, more competitions than 78% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | Japan | |
|---|---|---|---|---|---|
| 3×3 | 11.01 | 13.39 | top 10.5% | 458 / 3,329 | |
| Pyraminx | 4.77 | 5.99 | top 11.8% | 144 / 688 | |
| 4×4 | 44.25 | 51.05 | top 17.4% | 173 / 667 | |
| 2×2 | 4.16 | 5.58 | top 28.5% | 356 / 1,021 | |
| Square-1 | 20.71 | 25.83 | top 29.6% | 103 / 245 |
Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.
The line so far
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 21 Mar 2026Three personal bests in one day at Katano Spring 2026.
- 15 Jun 2025First competition: Kansai Odd and BLD 2025. A 12.93 3×3 single to start from.
Competitions
- Katano Spring 2026 · 21 Mar 2026 — 3 personal bests set
- Katano Summer 2025 · 15 Sep 2025 — 2 personal bests set
- Kansai Parity Party 2025 · 24 Aug 2025 — 1 personal best set
- Kansai Odd and BLD 2025 · 15 Jun 2025 — 1 personal best set
Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.
The circuit
The people whose scorecards keep turning up next to his.
- Kento Hirai (平井健斗) — met in 13 rounds, finished ahead 3 times
- Kohdai Kusatani (草谷幸大) — met in 13 rounds, finished ahead once
- Hajime Miyazaki (宮崎朔) — met in 13 rounds, finished ahead once
Next targets
- A sub-10 3×3 single — 21,172 people have one; it is 1.01 away.
- A sub-4 Pyraminx single — 9,892 people have one; it is 0.77 away.
Targets move as he improves.