Not sure about how things will go with this pairing, but it needs more chapters.

Hope to see sonic vs metal sonic.

Besides the grammer rushy story some of the adults are unreasonable. Marianne de Tristain or basically Henrietta's mom kinda perform some rowdy actions like her wiki/Marianne_de_Tristain . Though I can understand that if english isn't a second language or if the characters aren't that well known, so had to picture it somewhat from the medieval time.

Sooooo
Is the Hadghog in the title legit how you wanted to spell it or did you mess up hedgehog?
Like I need to know

It's a rush job.
Why is it not explained as to how Sonic can understand French? I sound like a geek, but it's the attention to detail that counts.

Metal and Sonic a tale of two hedgehogs and I like the story how it is going please update some more. also might borrow your idea in the future.

Grammar's a cluttered mess; you should bring a beta reader to correct almost all of it.

Really love the start of this. Rare for a fanfic to have Henrietta summon the main character but is also even more rarer to see Louise summon the rival to the main character. First time in a while for me to get excited in just the first chapter.
Hope to see more soon.