Magic Boy by Akira Daikuhara

7.30

Magically gifted boy Sasuke lives in peace, deep in the forest with his animal pals and Oyu, his elder sister. After their forest sanctuary is violated by a demon witch who devours one of Sasuke's animal companions, he vows vengeance. Leaving the forest, he sets out to master his magical gifts, making a pilgrimage to the home of the wizard Hakuunsai. While Sasuke learns the ways of magic, the demon witch terrorizes the countryside, and Sasuke works to complete his training in time.