Review Detail of CallMeItchy in The First Store System

The character design and world background are 5 stars for me. I got bored reading somewhere in chapter 530+ but I still read it until chapter 666. Too much training info; if there's no major event happening there's always training chaps for 2-5 out of ten chapters for 1 weapon that I decided to stop reading. even tho it's already chapter 600's there still chapters only about his training.