Classroom of the Elite (LN) - Vol 45 Chapter 2.9: Katsuragi Kohei is surprisingly troubled (9)

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

In an era where humans and demons compete in fierce battles for survival, the Hero has fallen.“…I will take your place.”Thus began the deception of the fake Hero.If exposed, it could mean the destruction of humanity.…But the imposter is just too good at it.[Academia], [Professor], [Hero]

"I want to run away from everything."

Some say reincarnation is a blessing, but for me, it's a dreadful curse. Cursed with endless reincarnation, I've been reborn as a villain 137 times. And all 137 times, I've been toyed with and killed by heroes who are far more cruel than the said villains... If I can't win no matter what I do, then I'll crush those so-called heroes at their very roots. - Quality Fan Translations, Made by Fans for the Fans - Villain Takes Over The Academy