Been reading this guy's Misuzu fics and they're all very good if you want to scope into Misuzu painting GKP's whole reason and existence. It's not a cute romance but rather a clingy love that threatens to drown the producer but he very much allows her too. While I don't think they've nailed down Misuzu 100%.as.they choose to ignore her more childish side, I think the way they choose to highlight her kind possessiveness is very good. Reminds me of old Mayu fics if I'm being honest.

https://www.pixiv.net/novel/show.php?id=25507236