In the past he was quite cheerful, having dreams to cleanse and destroy all Impurities and Magano, but after the Hiinatsuki tragedy, due to the fear of losing more "people that he cared about", he decided to stop fighting and quit being an exorcist. He often attempts to become someone big in various areas like: soccer, acting, etc. but he lacks all kind of talent and fails at everything, including simple things as map reading.
Even though he doesn't want to fight, he can't stand by and do nothing when someone needs help, and he is ready to risk his life to help those in need, for example, when he saved Benio from the impurity she had trouble defeating herself, and when he rushed to Magano to save Ryougo, not taking any dangers in consideration.
Rokuro is a bit reckless at times and is very talkative, or, as Benio calls him, "loud". He retains a lot of emotional pain but keeps a strong exterior to make sure none of his friends worry about him.