Tsurugi Seijo Adel no Yarinaoshi

Adel, the blind swordmaster, is hailed as a hero for leading his country to great victory in battle. However, he is in despair because he was unable to protect Princess Euphinia, to whom he has devoted his life, from the flames of war. "I wish I could see her again." Adel's wish is heard by a higher being, and he is sent back to the past, back when the princess was still alive. However, he is reborn as a beautiful girl...? The super-cute "Sword Saint," who possesses the powers of both a "Sword Master" and a "Saintess," will weave a tale of heroic rebellion and second chances! (Source: Firecross, translated)