Yoo-Bi’s invention was truly shocking as it stood to elevate the world's technological standard to a new level once completed. In fact, it might be even more astounding than the monster pets Han-Yeol had hatched. The monster pets were limited to the ones Han-Yeol sold them to, but this technology was different.

“No way! This is still incomplete, and it didn't turn out the way I intended it to be. I wanted to create a minigun mounted on your shoulders, but it proved quite challenging to mount mini-guns on a person’s shoulders due to their high rate of fire. Hehe!” Yoo-Bi exclaimed, releasing an awkward laugh.

Then, she continued, “So, I developed the shoulder cannon as an alternative. It doesn’t require any ammo, and I've designed sensors that will channel mana from its rechargeable battery for use as ammunition. Oh, the battery can also absorb your mana and recharge itself! And also!"

Tak!

Yoo-Bi handed him a pair of goggles, which seemed to be the remote controller for the shoulder cannon. Han-Yeol accepted the goggles and inquired, “So, I just need to wear these?”

"Yes," she confirmed. "I initially aimed to enable...