Ever since his fight with Diluc, he had been feeling large amounts of guilt for what he had done. He would avoid basically everyone, especially his brother. You were his close friend, and you promised to help him get through his problems.

One day he was sitting in the Knights of Favonius library, with a troubled expression on his face. You found him there and you approached him. He sees you coming and smiles, even though it took him an effort to do so.