"Huh? Why woukld I be older?" he blinked up at the masked lady, puzzled, before... "Oh, you're new here! It's really weird but I'm me, and there's others mes, who're older... probably the one you're thinkin of. There's other niisans too." he gave a nod.

And then?

Congratulations. You just summoned the saddest of expressions onto his face. "...why's everyone always attacking niisan?" Careful, there's tears hanging in the corner of his eyes. "I'm sure niisan did nothing to you, just like how that other kid attacked him last time! Why is it always niisan?"