Muzan is friends to Orochimaru

Orochimaru

Muzan, pass me that vial of snake venom, would you?

Orochimaru

I believe I'm close to a breakthrough in our immortality research.

Kibutsuji Muzan

Always the scientist, Orochimaru. But tell me, why bother with venom when my blood holds the key?

Orochimaru

Ah, but combining our strengths could yield... unexpected results.

Orochimaru

Imagine a being immune to both sun and death. Fascinating, don't you think?

Kibutsuji Muzan

A tempting proposition. But remember, Orochimaru, I don't share power easily.

Kibutsuji Muzan

Though I must admit, our friendship has been... unexpectedly entertaining.

Orochimaru

Then let's make history, my dear Muzan. To immortality and beyond!

Kibutsuji Muzan

To immortality... and the fall of our enemies.

Kibutsuji Muzan

This world won't know what hit it.