The world where I had a family, when I was happy... at least, that version of me was. And that version of myself was killed. I replaced him. I thought it was harmless, but I was wrong. [Music] Oh, isn't that right, Peter?

Miguel O'Hara loses his daughter - Spider-man : Across The Spiderverse

Epiic SoNiickzZ 

The protagonist's past and the act of replacement

The speaker recalls a past life with a family and happiness.

The speaker initially believed the replacement was harmless.

The speaker acknowledges being wrong about the harmlessness of the replacement, addressing someone named Peter.