So someone's using the same name as him as well. It's not just his appearance they're copying. That's more annoying and worrisome. The only reason it hasn't occurred to him that it might be his double is because the kid appears to be only a few years younger than her. No way she could be his 'mama' then.

He is annoyed by the kid's loyalty to this person though. Really smart, huh? He'll believe it when he sees it. "Mazakon. Mama's boy." He snorted, dismissive of his opinion. "There is only one Kanda Yuu and I'm the original. Here's the proof." He gestured to the partially hidden tattoo on his chest. "You're mama, whoever that is, is an imposter."