The other made such a funny face that Katsuro just answered honestly, accidently. "Because you seem to be an amusing guy." While talking about manners, the other seemed to have forgotten that one should introduce oneselves before asking for anothers name. Katsuro snickered. "My name is Katsuro, pleased to meet you," he answered the second question with a playful smile. It was completely fine to give him real name as people only knew his family name. The names of the actually important people were only known to people that had to do with his world. Not that his name was among that either.