One person: Starting with the Rumble-Rumble Fruit, his grandmaster uncle emerges from seclusion.

[Invincible + Effortless + Rumble-Rumble Fruit + Extremely High Seniority + Protective of One's Own]
I transmigrated into the world of "Under One Person" and became Zhang Zhiwei's second junior brother, Zhang Tianyi!
He was granted the Rumble-Rumble Fruit at the start, but was forced to seal it away for seventy-four years because his physical body could not bear it.
Breaking free from its seal, he returns as youthful as ever! The Innate Thunder Essence Sacred Body has reached its peak!
Elementalization, Mind Network, Thor's Might and Magic... he can do it all with ease.
My junior brother Tian has been crippled?
I stormed into the Yaoxing Society and grabbed Qu Tong to help my junior brother recover his limbs!
Is Zhang Chulan being targeted?
I immediately made the Ten Elders' electricity smoke!
I am the only nemesis of the old master Zhang Zhiwei, and the psychological shadow that Lu Jin will carry for life.
Disciples: "Master, the Quanxing Sect has launched an attack on the mountain!"
Zhang Tianyi: "Shut up! This is my promotion match... Holy crap, you dare to cut off my internet? Quanxing, huh? Die, you bastard!!"
Zhang Tianyi: "Zhang Chulan, call me Second Master. From now on, in this world of supernatural beings, your master will lead you to walk sideways!"
The synopsis is insufficient; please proceed to the main text to see how this centenarian "young man" strikes a chord with lightning in the world of supernatural beings!