Super Fusion System

A high school student and a teenager buy a soda and get an electronic watch, which turns out to be a super system that can integrate everything, machinery, and weapons. For example, if you fuse an attribute crystal core, you will have a certain attribute super power; if you fuse a weapon, you will have the ability to control weapons and upgrade abilities. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.