|Family||Koichi Yotsuba (father)|
Misato Yotsuba (mother)
Makoto Yotsuba (younger brother)
Akio Yachigusa (grandfather)
Haruko Yachigusa (grandmother)
|Voice||Kaede Hondo (Japanese)|
Lee Ji-hyeon (Korean)
Vicky Chan Wing Ki (Cantonese)
Mu Hsuan Ming (Mandarin Chinese; Taiwan only)
Praewa Suthamphong (Thai)
Kokoro Yotsuba (四葉 こころ Yotsuba Kokoro) is the main female human character in the Kami-sama Minarai: Himitsu no Cocotama anime. She is a fifth-grader, making her 10 years old.
Kokoro Yotsuba has dark brown hair tied in pigtails with pink ribbons, and brown eyes. She wears a long-sleeved yellow shirt with pink trim, buttons, and white lace around the collar, as well as a green four-leaf clover in the corner. She also wears a frilly, light blue skirt, white socks, and yellow shoes.
Kokoro Yotsuba is clumsy but kind-hearted and always takes care of her things, because her grandmother told her that everything has a soul. When she befriends the Cocotamas, she promises to never reveal them to anyone else and loves to watch them play. She likes to draw and her most cherished object is a green pencil, which is the object that Luckytama's spirit was born from.
- Her given name, Kokoro (こころ), is Japanese for "heart" (referring to the mind and soul) and her surname, Yotsuba (四葉), is the Japanese word for a four-leaf clover.
- Her birthday is September 9, 2006.
- According to episode 18, her kazoedoshi age is 11. This foreshadows episode 48 as her 10th birthday is the main focus of the episode.
- Her dubbed names (except for her Korean one) remained the same as her original Japanese name:
- Kokoro made a cameo appearance in Save Sakura Town, Open! The Door Of Happiness to symbolize the end of the Cocotama series on television.