When the Duke first saw Al, he thought he was an interesting kid
When he took Al with him, he realized he was a naughty kid
When Al started to go against him, the Duke said that it was just a rebellious period and he just needed to be disciplined.
Facts have proved that he thought too simply...
——The Duke faces the biggest problem after time travel. He wants to find a partner for Al as soon as possible.
Al said, no need to bother, just promise me.