[quote=Ruby]
I could see Dream knowing him simply because of how old they both were. Maybe the dynamic of Metanoia talks/vents, Dream listens and offers what little he/she could. It doesn't seem like Metanoia would anything from Dream? I can't see Dream wanting something from him, unless he likes to share the current going-ons of the current Pantheon; as the Dreamers don't really regret much, and their pasts...well, checkered as they may be, are mostly something Dream is at peace with.
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If there's anything Metanoia wants, it's to either hang out with someone who hasn't done much bad or regretful, or redeem everyone everywhere. If Dream hasn't done very much that's bad, then that's enough reason for Metanoia to hang out with Dream. Maybe Metanoia will even vent to Dream, slightly envious of how Dream stays out of mortal and divine affairs for the most part, while Metanoia is compelled to get involved somehow. Metanoia could give Dream information about what's going on, perhaps. But only if Dream asks. Metanoia's a little lazy like that.