Kaisei
Expression 9 — The Humanitarian · predominantly a boy’s name
The numbers in the letters
Compassionate, idealistic, and selfless. Number 9 represents universal love, completion, and humanitarianism. You are driven to make the world a better place.
2 + 7 → 9
What the vowels want: someone to be responsible for. Care is how you say everything you cannot say directly, and the house is never quite done because you are never quite done giving.
2 + 4 → 6
What the consonants project: light. You get read as the entertainment even on days you came to listen, and people are startled the first time they see you serious.
3
Kaisei in the real world
137 Americans have been named Kaisei since 2005. It peaked in 2007 with 10 newborns and 6 carried it in 2025 (#23,524).
US births per decade, 1880–2025 · SSA public data
Considering Kaisei for a baby?
Score it against your due-date window and the family’s charts — free, every point explained.
Score Kaisei →The name is half the signature
A birth date completes it — life path, birthday number, and how they interact with Kaisei’s letters.