Common misconception in fantasy in fantasy or sword related genre. A sword is not heavy. Judging by the size, that sword is probably only 2 kg and most of the weight is not on the blade but on the guard, handle and pommel. So it shouldn't be hard to lift and swing it, even for a child
Yeah, my laptop is heavier than a longsword. If I can carry it with just one hand, a kid could probably swing a longsword with two hands like they're designed for. That said, who's to say that fantasy swords don't just look stupid but is genuinely stupidly designed and the sword she has is 10 kg or more.
Perhaps it's because these volumes contain more chapters. If you look at the last two volumes, the number of chapters per volume went from 5 to 7. Although that could also be due to his doujinshi.
Common misconception in fantasy in fantasy or sword related genre. A sword is not heavy. Judging by the size, that sword is probably only 2 kg and most of the weight is not on the blade but on the guard, handle and pommel. So it shouldn't be hard to lift and swing it, even for a child
Less actually, a real medival sword average 1kg, wall hangers tend to be heavier. Center of gravity tend to be around 10cm up from the crossguard. European swords where razor thin, have distal taper, and made with spring steel, you can bend them up to 45 degrees depending on the type. They are not lumps of metal. Cartoons bending rapiers isnt fiction.