Ultraman: I Exploit a System Bug and Become Invincible

Gu Jia transmigrated to the Ultraman world. Not only did he become one of Ace's only two adopted sons, he also became an Ultraman student about to take his college entrance exams.

The bad news: His talent is terrible, and he's at the bottom of his class.

The good news: He has a transmigrator's golden finger System.

The bad news: This awful System makes him weaker the more he trains...

Watching his light energy dwindle despite all his hard work, Gu Jia angrily flipped the table. “Train? Train my ass!”

[Slacking off: Light energy +1, physique +1...]

Gu Jia: “???”

It seemed he'd found a bug in the System...