The Demon's Menu - Chapter 15: The Sound of Wailing

Until he became the lowest-ranked master, his lonely and luckless life never changed.Suddenly one day, a descendant injected him with a nanomachine, and the machine started ‘speaking’ to him.[I am the seventh generation Nanomachine manufactured by Sky Cooperation, and I am operating as a central nerve connected to your brain.]“What? What are you talking about?”This was beyond the boy’s knowledge, he turned pale.The Nanomachine linked to his cerebrum realized the User was not understanding a single word it said.“Who are you, and why are you doing this to me?”[“I am the seventh generation Nanomachine.]“Nano Machine?”[Yes, Nanomachine.]The boy’s face hardened.Mashin was the deity the Mashin Religion worshipped, along with the Sacred Fire.The religions’ Master communicated with Mashin.“Um, are you really Mashin?”The boy knelt down and asked with a trembling voice. At this, the Nanomachine attached to his cerebrum realized it had been misunderstood.

“Ding ~ Host has been killed, experience + 100.”

“Ding ~ The Host despises the strong, imposing manner + 100.”

“Ding ~ Host has consumed a point, you have received a modern hand grenade!”

You can cut me, but can you not cut my face? He had to rely on his face to survive!

Ye Fan had traveled through a fantasy world filled with slaughter. The system told him that he could live forever!

You are an Earth Divine Realm expert? Sorry, kill him! Are you a Heavenly Dipper Sovereign? In my eyes, it’s too trashy!

Indestructible! This world is vast and boundless, and I am the king!

- Description from Novelupdates

After being transported to this world, Nara Kazuki discovered that as long as he grinded enough proficiency, his jutsu could level up.And so, he began walking a very... peculiar ninja path.

“Send me to the past.” That’s how the first step toward revenge began.