Yotsuba!
Yotsuba Koiwai is a green-haired five-year-old girl who just moved to a new city with her adoptive father. Everything is a brand-new adventure for her, from learning how air conditioners work to discovering the "danger" of swings and doorbells.

With her high energy and weird way of looking at the world, she quickly makes friends with the three sisters living next door. This slice-of-life comedy is 100% wholesome, funny, and perfect for anyone who wants a "clean" read that captures the pure joy of being a kid.