Responses
Well, I found the manga of the first scenario.
https://www.mangago.zone/read-manga/reincarnated_as_duke_s_blind_daughter/
At first, I was weirded out since I don't remember reading the manga, but then I remembered that I read the novel.
I'm sorry, if I can't remember much, but it's a comic about nobles (and/or royals) in a fantasy world, which is possibly an isekai comic about otome games.
I remember two scenarios and I'm not sure if they're from the same comic, but they have something in common, and that is they're both set when the characters are still kids.
In the first scenario, the MC and a boy (which is probably the ML) were childhood friends. One day, they were running or racing against each other, until the MC almost went in danger. They encountered something which is probably a wolf, if I remember correctly.
In the second scenario, the MC and a friend (which I'm not sure of their gender, because of blurry memories) were inside the MC's residence and they were checking magical stuff out. There was a part when the friend fell inside something, I think, which is probably a slide? And it teleported them somewhere around the residence.