Using this Kamen Rider Zi - O core figure is easy. First, pick the armor you want from previous riders. Then, gently attach the armor pieces to the core figure. Make sure they fit well to avoid any loose parts. When handling the figure, be careful not to pull too hard on the joints as it may damage them. To keep it in good condition, store it in a dry place away from direct sunlight. You can also use a soft cloth to clean it if it gets dirty. Enjoy creating different looks with your figure!