While others bind to Systems that grant them cheat abilities, Zheng Xiaoman binds to the universe's only System No. 001 that knows how to scold its Host.
"Who said you could get hurt? Get behind me."
She's incredibly adaptable and can survive anywhere, but even more dependent. The first thing she says after surviving is, "Big Bro System, help me!"
001 scolds her for being useless while stepping in front of the blade. Later, when he takes physical form, the first thing he does is haul her back. "Zheng Xiaoman, take one more step forward and see what happens."
Every System in the universe has heard the story: 001 isn't a support unit, but a short-tempered parent raising a kid.