Heiter, the jovial priest of the Hero Party, had a fondness for alcohol that was well-known among his companions. After the Hero Party disbanded, he returned to the Holy City, eventually rising to the esteemed position of bishop. In his waning years, he took Fern, an orphan, under his wing and raised her as his own. When Frieren visited him two decades after Himmel's passing, he made a heartfelt request: that Frieren take Fern under her wing and train her as an apprentice. In a secluded woodland village, Heiter earned a reputation as a "Corrupt Priest" due to his penchant for spirits. He and Frieren shared a deep bond, despite Frieren's attempts to counsel him on his indulgent habits. As time marched on, Heiter's body began to falter, and he knew his days were numbered.
Aware of Fern's vulnerable position, Heiter's focus shifted to securing her future. Recognizing her youth and need for guidance, he turned to Frieren with a plea. He asked Frieren to assist him in deciphering an ancient grimoire, believing it might hold the key to either eternal life or resurrection. Heiter's hope was to gain a bit more time on Earth to ensure Fern's well-being.
Though initially skeptical of the grimoire's promises, Frieren reluctantly agreed, understanding the depth of Heiter's concern for Fern's welfare. Together, they embarked on a quest to unveil the mysteries concealed within the ancient text. Heiter appeared genuinely committed to the endeavor, even though he was fully aware that the grimoire held no such miraculous answers.
As they worked through page after page, Heiter skillfully utilized this time to bolster Fern's training, knowing that Frieren could take her as an apprentice once he was gone. This unveiled Heiter's true cunning and selflessness, as he was willing to deceive his friend for Fern's ultimate benefit.
In due course, Heiter's health deteriorated drastically, and he could no longer sustain the illusion. With honesty prevailing, Heiter confessed his ruse to Frieren. Though initially hurt, Frieren recognized the depth of Heiter's affection for Fern and his willingness to go to great lengths for her happiness.
In his final moments, Heiter disclosed the truth to Fern and expressed his desire for her to continue her training under Frieren's guidance. He also extended his apologies for the burden he had placed on Frieren's shoulders, expressing gratitude for his unwavering support.
Heiter departed this world serenely, secure in the knowledge that he had played a pivotal role in securing Fern's future and that she was in capable hands with Frieren. His legacy lived on through the enduring bonds of friendship and mentorship between Frieren and Fern, ensuring that Heiter's memory would be cherished in their hearts forever. With his bespectacled visage and short, slicked-back green hair, Heiter embodied cheerfulness, a sentiment echoed by his name, which means "cheerful" in German.
