I need a Merthur fic where Merlin accidentally becomed Modreds pseudo-mom and so Arthur becomes his dad and everyone thinks that Merlin legally adopted Modred and that Arthur and Merlin are an official Thing. Gaius ofc acts as sort of grandfather/great uncle. What's surprising is that UTHER acknowledges him and is slightly less rude with Merlin and Modred. Somehow Camelot catches wind of Uther basically claiming Mordred as his grandson, albeit begrudgingly. Mordred still calls Merlin Emrys but it's become more of a synonym for mom "cmon emryyyss I promise I won't be a bother!" "Arthur already said no and you really expect me to allow you to go after that stunt you pulled last week?" The knights and Morgana and Gwen all refer to Arthur and Merlin as mum and dad when talking to Mordred and he thinks it's in a joking way but they're completely serious because Merlin must have the adoption papers filled out and Arthur finally got his head out of his own arse. Surely with how Merlin mothers (smothers) Mordred and Arthur's over the top overprotectiveness.
Would Arthur be allowed to name Mordred his heir once he's King and married? Ehh. It gets passed through even if not a thing that's allowed.
I also need several merthur fics of them acting like Mordred's parents