With the Rinnegan from the Start, I Can Do Whatever I Want

System + gacha + invincibility + sweeping all before him + no saintly mercy + Rinnegan + Sharingan

Su Mu levels up too quickly early on, so he fears being captured and dissected. He chooses to hide his strength, using a black robe and white mask to conceal his identity.

“You ask why I’m so arrogant?”

“What can I say? I’ll always be one level above you!”

Clad in a black robe and wearing a white mask, Su Mu relies on his Sharingan and Rinnegan to become the dreaded Ghost-Eyed Masked Man of the high-martial world.

Mangekyo Sharingan, Six-Tomoe Rinnegan: he can kill anything in an instant.