A Banished Sage’s Progress to Discovering the World: The Story of What Happened When I Freed Myself from My Childhood Friend

Haru, a lowly mage, works hard day in and day out under the abuse of his childhood friend, the great Hero Leticia. But one day, as he's enduring another of her scathing lectures, he decides he's had enough and quits on the spot. Now he embarks on the most difficult journey of them all—rediscovering himself! A fantasy story of overcoming abuse and rebuilding your life begins here!

(Source: K Manga)