well WP is weapon points, I didn't explain what it was in the video lol, the weapons in this game doesn't boost your attack unless it's a grid bonus, you lvl them up by fighting mobs and at the end of each fight you get exp, money, and weapon points, 3 star lvls per weapon, each needs different amount of WP to lvl up, in the process you unlock blocks from the weapons to use with the weapon you want as your main weapon, once you fill up the grid for the weapons, there is a secret bonus for each weapon, right now I'm sticking with the fire weapon since my element resist is high across the board with the way I have my main guy set up and why he has the lowest HP too which is kinda ridiculous tbh.