It's a story about magic stones...... What did you expect? It was never meant to be realistic, it wasn't trying to be realistic. The manga did exactly what it intended to do and that is take you on a roller coaster of emotions. If you wanted something realistic, you shouldn't have read a manga about magic stones. It's not the manga's fault ╮(￣▽￣)╭
It's a story about magic stones...... What did you expect? It was never meant to be realistic, it wasn't trying to be realistic. The manga did exactly what it intended to do and that is take you on a roller coaster of emotions. If you wanted something realistic, you shouldn't have read a manga about magic stones. It's not the manga's fault ╮(￣▽￣)╭