If you're looking for anime similar to Karl to Fushigi na Tou, you might like these titles.
Pig lives at the top of a hill in a town surrounded by a destructive, dark cloud. Before Pig's father leaves to find a solution to the cloud, he builds Pig a small wooden dam to protect him and the town. The dam's windmill keeps the cloud at bay, and Pig now has the responsibility to care for the dam. Young and alone, Pig finds love and family through his friendship with Fox, and continues to care for the townsfolk in a variety of ways. However, Pig struggles with the absence of his father, and his desire to search for his father competes with his need to keep the town safe.
Komachan lives in the attic of a house on top of a hill and loves making things. She spends her time taking frames of her favourite doll. She works hard and is kindhearted, and her story leaves viewers with a warm feeling inside.
One day, Sandy's father, Prof. Brown, sends her a stuffed koala doll from one of his trips. Sandy discovers that, after rubbing the koala's nose, he comes alive. His name is Blinky and he is from the magical "down under" Koalawalla Land. They are soon joined by his little sister, Pinky. Adventures ensue in both Sandy's world and Koalawalla land. Among the characters met are two men after the "magical talking bear", a lizard that bounces back and forth from the magical realm and the real realm, and kangaroo police officers.