The manga really likes to jump around, lmao.
The translations are "meh", but they're good enough to understand what's going on in most cases… it just doesn't help how so far the manga is 60% abrupt flashback, jumping all over the place.
The web novel was waaay less scatterbrain, but I think the mangaka felt it would be a good idea to compress the childhood arc into flashbacks to skip ahead to the school part of the story. Personally I found it more interesting the way the WN/LN did it, but I guess that story would have dragged on for a while.