[It was intriguing at how the fact that Setsuna has not met the 'previous' Ribbons -- it's either the persona had spent time before the Meister came along, or perhaps did business like he did at first: hidden.]
'Sent home' ... despite Acumen's insistence that there is no chance for such, or for escape. Then again, not all machines are perfect, hm?
Do you think Acumen... disposes of inmates? I can't help but notice the graveyard...