It's an OC world view, mecha transformation system.
Flying insect monsters [Skyworms] suddenly appear in Yuxian City, affecting order and life.
Hua Yuyao and Jing Xiuxing were followed by strange spherical mechanical boxes. After they came into contact, the mechanical boxes turned into weapons.
When facing the attack of the beetle, they each took up weapons and successfully transformed to fight against the monster.
Concept: Multiverse