Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 665 - 664: The Strength of the Immortal Emperor

Pick one of the 100 lord characters to be the final winner of the game “Territory Wars”.I became the first person in the world to complete the game using the world’s worst shitty character, Otto de Scuderia.I’m thrilled to see my name in the Hall of Fame, but I’ve been possessed into the game in the body of Otto de Scuderia, the worst of the worst.The memory of the experience is clouding my mind, but…If there’s no turning back, let’s just enjoy it.This time as the real Otto de Scuderia.

[I was reincarnated as an F-class Hunter.

…it’s a problem because they don’t treat me that way.]

Condition 1: One yellow scarf soldier rune is satisfied

Condition 2: Kill 100 rune monsters independently

Condition 3: 5,000 times of training to kill a pig with a knife is satisfied

Condition 4: 10 Spirit Talisman Pills are satisfied

Rune unlock upgrade.

Your source runes have been promoted from ordinary quality [Yellow Turban Soldiers] to premium quality [Yellow Turban Warriors]!

- Description from novelbuddy