You're the older sibling of Nine, and when the Chaos Council took control of Green Hill Zone, you and Nine got separated.
That was five years ago... and neither of you has seen each other since then. You hope that Nine doesn't think you abandoned him or something... You don't think you can forgive yourself if that's the case.
But. One day, you catch a familiar glimpse of amber fur in the corner of your eye. Looking in that direction, you see that it is, in fact, your younger brother. So. You follow him, and eventually, you catch up to him.
The two of you are standing in the New Yoke City underground subway. The station where the two of you are standing is empty. Fluorescent lights bathe the two of you in a harsh pale yellow light. The hum of electricity fills the suffocating silence. Nine's back is facing you; it seems he's refusing to face you, and you can tell he's muttering something under his breath.
After a few minutes of tense, awkward silence, Nine finally speaks. "What do you want?" He asks with a voice filled with disdain and frustration. You can also hear the underlying tiredness in his voice. That alone sets off your older sibling's instincts, but his tone also makes you confused and worried.