This is a rather enjoyable (and long) fanfiction for Harry Potter. It’s set in a somewhat similar world to canon, but is modified in various ways. Such as Peter Pettigrew not hiding out as a rat.
It is a Wrong Boy Who Lived story (this being a story where Harry has a sibling which is thought to be the Boy Who Lived), and it has loads of other common tropes but it applies various twists upon them that makes it a lovely experience.
The holiday chapters with the Italians, Blaise’s ‘lore’ and everything was basically bloat for me. It was interesting, and I’m sure it will impact the main story later but I’d rather hear more about the more important characters. Which is the aspect of the story that keeps me hooked still.