The Magician Kunon Sees Everything summary:

Sometimes all it takes is one word to change your whole life.Kunon Gurion was born blinded by the curse known as the "Hero's Scar."Unable to see, or even see the meaning of life, he spent his childhood in apathy.Then one day, a water emblem appears on his body, and it turns out he is capable of magic.So what?Regardless of whether he has magical power or able to use magic, the fact remains that he cannot see.Kunon was still unable to see the meaning of life.Though an unexpected comment that was not intended to be such awakened Kunon.