Hoshi No Witch: v. 1

Before his death, Kazuki's father told many stories about Artemis, a magical star not unlike their own, Planeto. Now an orphan living with his brother, Kazuki daydreams constantly about Artemis, despite his brother's warnings that the planet doesn't actually exist. Then one day, Kazuki runs into a girl from Artemis...who disappears and is quickly replaced by another girl...who puts a curse on him that he can't remove unless he finds the witch of Artemis...who happens to be the first girl he saw! But when he finds her, he discovers she's much more than just your typical sorceress. Magic and the struggles of growing up intertwine in this tale of learning to follow your instincts in spite of your best - or worst - intentions.