Axel's mission was to kill Chatot. When Axel got to the guild, he and Chatot had an unpleasant talk. Axel then killed Chatot. But Axel planned what he should do next after killing Chatot. Axel decided to burn down the guild with everyone inside it. He thought that he should forget about Hikara. But since she's his friend, Axel had no choice but to save her. He took her to the house where he first met her. He hoped that he would never see her ever again. He has to move on with his life in the DHO.