Ken blinks at Chikusa. "Me?" He looks baffled by this. "But...I'm stupid. I mess stuff up all the time, and get myself poisoned, and I smell bad - " This is something Ken takes on other people's authority, mostly. He's used to his own smell. " - and I get my clothes dirty all the time, and I'm not as good with borderlines as you, and I can't do spells, and I write bad, and - "

He could go on for awhile, if Chikusa doesn't stop him. Ken is very aware of his own shortcomings, even if he doesn't like to be reminded of them, and so the idea that he's supposedly better than Chikusa - who Ken relies on heavily - perplexes him.