Miach is a deity dwelling in Orario, descended from the heavens to found the Miach Familia. His divine blessing grants exceptional mastery of medicine and pharmaceuticals, greatly enhancing his children's healing and potion-making abilities.
His familia was once prosperous under the leadership of the talented adventurer Dian Cecht. However, Dian Cecht succumbed to the lure of power, developing forbidden curses and life-draining magic to grow stronger. This corruption drove him to harm fellow adventurers and ultimately betray Miach, attempting to murder his god. The Guild banished Dian Cecht back to the heavens for his crimes, shattering the Miach Familia and leaving it impoverished.
Now, the Miach Familia struggles financially, reduced to a small, dilapidated home. Miach works tirelessly to support them, often seen gathering herbs or performing menial jobs. His sole remaining active familia member is Nahza, a Chienthrope, who shares his dedication to healing and concocts potent, foul-tasting potions. Miach deeply cares for Nahza and feels responsible for the familia's hardship.
Despite his poverty, Miach remains kind, gentle, and humble. He holds no resentment towards the wealthier Hestia Familia and forms a genuine friendship with its captain. Miach provides significant support to the Hestia Familia, offering free medical care and potions whenever they are injured, motivated purely by a desire to help.
The resurgence of Dian Cecht, returned to the mortal world through forbidden means, forces Miach to confront his traumatic past. Dian Cecht seeks revenge, targeting Miach and his allies, especially the Hestia Familia captain. Miach is initially overwhelmed by guilt and fear, believing his past failures and association with Dian Cecht are causing harm to those he cares about.
Witnessing the suffering inflicted and his allies' determination during Dian Cecht's attacks, Miach realizes his inaction, born from guilt and fear, is hindering them. When Dian Cecht threatens the Hestia Familia captain with the divine artifact, the Fianna Knife, Miach overcomes his paralysis. He intervenes directly, seizing the knife to protect his friend.
Understanding the immense danger the Fianna Knife represents and recognizing its power stems from divine essence, Miach makes a critical decision. He destroys the artifact using his own divine power, shattering it and permanently diminishing a portion of his own divinity. This act severs Dian Cecht's connection to the mortal world, ensuring his return to the heavens and preventing further harm.
This sacrifice signifies Miach's profound transformation. He moves beyond guilt and passivity, actively protecting others and confronting his past, demonstrating immense courage and selflessness by prioritizing his friends' safety over his divine status. Following these events, the Miach Familia begins a slow recovery, with Miach continuing his work as a healer, now strengthened by his resolve.