Last dungeon of defeat - Humiliation for female warrior Erina Final by Pinkbanana-soft

Overview:
The brave was defeated.
The Demon King who threatens humanity appears, and the invasion of monsters has begun for more than ten years.
Monk’s Irina was a member of a brave group heading to the Demon King’s Castle.
The party boarded the Demon Castle, but without reaching the Demon King, it was annihilated by one of the four heavenly kings.


SPOILER
Irina survived a hard time. Other friends escaped her with the power to purify the demon’s madness.
Somehow escape the Demon Castle and report the hero’s defeat to the king.
However, it is also the supreme pleasure for a monster to defeat the power of purification.
In search of her clean limbs, a group of monsters hang down and attack.
Irina started running with an inspiring heart.