I dunno if it's even possible to renegotiate. I do know from a friend that if you don't pay up you can get dragged into the spirit realm. But mine is kind of 'auto pay' so I don't think it's an issue.

[Denki's sounds the same...? He scans the page.]

Looks like it can also happen if you 'lose your sense of self'.

[That's a new one to him.]