Nicer? Mmm...it kind of happened gradually as he worked with the police force to stop people using AT to commit crimes. That was his job. Over time though, he began to hate AT and everything to do with them. Sometimes I'm not even allowed to tune near him if he's in a bad mood. [Sighs. He loves AT, and yet his brother hates them]
Something happened awhile ago to his unit. I don't know how much I can say about it, but it really made him hate AT. That's why he used me and Agito, because we could stop people using AT really easily. Agito is one of the best riders after all.