After I Died of Old Age, They Finally Regretted It

A hero's party faces the Demon King.

When the Demon King has to face the strongest human hero, a hot-tempered dragon girl warrior, a cold and ruthless snow-woman mage, and a dimwitted elf priest, how will he respond?

In the 21st year of the Xilin calendar, after ten years of trials, the hero's party reaches the Final Valley where the Demon King resides.

The Demon King is slain by the hero's party.

The Demon King is dead.

In the 81st year of the Xilin calendar,

Hero Laifu dies of old age.

The hero is dead.

Those ten years with you were enough to stay in my heart for a lifetime.

After the hero who spent ten years by their side dies of old age, his long-lived companions are left filled with regret.