If you liked the Kiki's Delivery Service manga, the Anime-Planet community thinks you'd like:
Legends tell of a floating island in the sky known as Laputa, upon which is rumoured to be treasure beyond a person's wildest dreams. Sheeta is an orphan girl who is being hunted down because of her necklace, a rare Levistone, which legend says will lead the way to Laputa. One day she is saved by Pazu, a miner apprentice and also an orphan, and together they set out to escape from her would-be captors. Unfortunately, their friendship must go through endless trials in their quest to hide Laputa's location. What is Sheeta's mysterious legacy, and what hidden motives do Sheeta's enemies have in regards to finding Laputa?
Both Kiki's Delivery Service and Castle in the Sky are a story about independence and the coming of age for the main character. There is a theme of cooperation between the hero and heroine in each, and a strength which they exude.
What is the problem with a little witch trying to learn magic on her own? Well for one she eventually stirs up some serious trouble for the people around her. This happens to both Kiki in Kiki's Delivery Service and Aisia in Da Capo; both have good intentions but neither full-fledged witch can fully manifest their powers. Both witches strive to make the people around them happy; will they succeed in their goal?
Chihiro and her family are on their way to their new home, when they discover an abandoned amusement park. After Chihiro's family mysteriously turn into pigs, she is thrown into a surreal world of magic and fantasy. Join her as she struggles to survive in the bathhouse of the gods, ruled by an evil witch who has stolen not only her name, but her way back to the real world.
Both Spirited Away and Kiki's are innocent in setting and are just fun loving. Both have aspects of magic and highly creative imagination. These manga seem to be more directed at children while being entertaining to the adult population as well.