Total babies named Kaisei (all years): 131
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 9 / #8626 / 0.001% |
| 2023 | 6 / #11506 / 0.000% |
| 2022 | 7 / #10319 / 0.000% |
| 2021 | 6 / #11423 / 0.000% |
| 2019 | 9 / #8517 / 0.001% |
| 2018 | 5 / #13135 / 0.000% |
| 2017 | 9 / #8492 / 0.000% |
| 2016 | 6 / #11421 / 0.000% |
| 2015 | 7 / #10072 / 0.000% |
| 2014 | 9 / #8465 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 2013 | 9 / #8447 / 0.000% |
| 2012 | 7 / #10248 / 0.000% |
| 2010 | 9 / #8451 / 0.000% |
| 2009 | 7 / #10422 / 0.000% |
| 2008 | 5 / #13565 / 0.000% |
| 2007 | 10 / #7881 / 0.000% |
| 2006 | 6 / #11337 / 0.000% |
| 2005 | 5 / #12366 / 0.000% |