|Season||Hikari Pretty Cure!|
|Home Place||Light Town|
|Relatives||Tsukikawa Rikka (mother)
Tsukikawa Daichi (father) Tsukikawa Hinata (older sister) Tsukikawa Lily (older sister) Tsukikawa Maria (older sister) Tsukikawa Kaoru(older brother) Tsukikawa Itsuki (older brother)
Kasumi is youngest from Tsukikawa siblings. She often asks quiestions that are hard to answer.
All of her siblings care for her very much, Itsuki too but won't admit it. She like them all but most often she is with parents or Hinata.