In the early copies of Eiyuden Chronicle there has been a bug that may prevent you from recruiting one character. Since there is conflicting information on whether this bug has been fixed in the current pre-release patch for all systems, I will show how I recruited this character. Read on for light location and character spoilers if you want to make sure.
The character that may become unrecruitable is in Daphan Village, which is available after about 10+ hours into the game. You may want to bring Cassandra as a support character to make sure you can change party members freely. When you come to the nation of Euchrisse, the story points you towards the capital, Hishahn. Daphan is past Hishahn, to the north-east. You can go into the western village of Twinhorne without trouble, just don’t enter Daphan before you’ve been to Hishahn.