How Come You Are Invincible When You Are Fishing in the Demon Slayer Division?

[Relaxing and happy + Steady upgrade + Decisive killing] This is a world where spiritual energy is revived, where everyone is cultivating immortality, and there is a mixture of humans and demons. The Suyang system that traveled through time was close to him and could see the monster's health. Then he discovered: As long as he dared to show his health, there was nothing he couldn't kill...