I, Who Have Refined My Energy, Am Invincible in the Ultra World.

System text + single female protagonist + invincible + not the Holy Mother + cool text Once in time, Lin Yu, who was originally an ordinary college student who had just graduated, was suddenly abducted by a system into an unknown world. He wanted to show off his talents in this world, but he never thought that the system was worried about his weakness and feared that he would die suddenly when he went out, so he was forced to sleep for 50 million years! It was not until many years later that Lin Yu, who woke up, looked at the somewhat familiar planet in front of him and the familiar monsters on the planet, and couldn't help but sigh. No, Gorba? No one told me this was the Ultraman universe? But, it doesn't matter, I, a cultivator of immortality, am not a vegetarian either! Dark giant? Surrender by force! Ancient monster? Destroy it with one punch! Monster: Why is this guy so scary! Teliga: Compared with him, I am simply an ordinary person! Zeta: Before meeting Lin Yu, I never thought that an earthling could possess such power! Lin Yu: As a Qi training period, it is reasonable for me to practice Hongmeng Purple Qi, right?