
I would like to read it, but I see a small boy, I want to know is there like a big age gap?

This should be an isekai, the woman's the MC.
The age gap is what you see, he's a kid and she's at least a teen, so they're at least five years apart from each other if not more.
In a few words, she read about the boy in a novel and felt sorry for him since he's the villain in that story, if I recall correctly. I don't think she died, she just woke up in the body of a maid working in the ML's parents house, and she's his only friend and supporter.
With time the kid gets more and more fond of her, not before trying hard to keep her far and make her hate him, until it turns into love after some years.
It's a good read in my opinion, I really liked they're relationship while he was a kid, but it turned less interesting once he grows up because the FL is a bit of an idiot.

I know that's late and all but
http://www.mangago.zone/read-manga/kuroshitsuji/an/manga/kuroshitsuji/v18/c096.5/pg-23/
I can relate to that soooo much, I remember when my cousin took off my tooth lying, saying he wanted just to see it. I was angry to him all day lmao
Can someone tell me, more or less, how many chapeters we have to wait for him to remember based on the novel. ╥﹏╥
The novel is complete but boyyy did this webtoon take a completely different path since Claude lost his memory. In the web novel Athy would have gone to a different *country* and this business with Jeanette went nothing like this. Claude wanted to see Athy so badly on his own that he set up their meeting and her return to the palace. This is so different all bets are off.
I honestly have no idea where the story is going at this point and I don't necessarily like it either. I know the webtoon artist said she wanted to focus on familial love instead of romantic love, but all I'm getting is angst. It felt like a huge change for a Claude in the novel, that he was legitimately... trying to hold on to this person he couldn't remember but hurt him desperately to lose. That's gone here. And there was no call for Jeanette either.
Maybe she just chose strange shots? But this scene is where we were supposed to feel without a doubt that Athy was irreplaceable for Claude, with or without his memory. We didn't get that.
That's messed up. So it's up to the artist, hope they reconcile fast. Thanks for the reply