Review Detail of Shadow_Wandering in Blacksmith: You Are Making Mjolnir For The Forging Exam?

well the story was fine until 450chs, everything is about blacksmithing, but after that everything is about technology there was no blacksmithing, and weirdly M.C used to have a sister, but M.C's sister disappears, i mean it felt like, there was some time skip/missing chapters/ or author abounded the blacksmithing part and started to make a fresh arc, kind feels confusing.