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In the entire world, Kaisei (Kaisei , كايسي) is a rare largely female, but infrequently boy's forename. The first name Kaisei is characteristic of Eastern Asia, particularly Japan, where it is a rare primarily female, but scarcely masculine name.
Ryu, Tomori, Tokita, Forman, Fukahori, Yanagi, Yamada, Arimura, Konakao, Ichikawa, Iwamoto, Onodera, Motoyoshi, Miyajima, Hamamoto, Watanabe, Yamakawa, Muramatsu, Takada, Levine, Davies, Suzuki, Tay, Sato, Sada, Chin, Joji, Toda, Iryo, Ueda, Kobayashi, Satou, Evans, Inoue, Ishii, Isida, Iwano, Omine, Sasaki, Shindo, Juyan, and Takahashi