Original Name 小岩井 四葉 Romaji Name Koiwai Yotsuba Nicknames Yotsuba Series Yotsuba to! Age 5 years old Weight Not specified Height Not specified Date of Birth Not specified Blood Type Not specified Yotsuba Koiwai from “Yotsuba to! – A spirited and curious protagonist Personality Yotsuba Koiwai, the main protagonist of the “Yotsuba to!” manga series, […]