Raised in a village devoted to worshiping the Demon King, Tishia was selected as a sacrificial bride, periodically offered to wed him and demonstrate loyalty, averting his wrath. Her community expressed love while simultaneously preparing her for this sacrificial duty, weaving obligation and emotional manipulation into her past. She encountered Demon King Evelogia and Gozu in the forest, initially accepting her fate, fearing escape would bring destruction upon her village. Identifying Evelogia by his white hair and red eyes, she found his appearance contradicted her fearsome expectations, remarking he was "cute" and that becoming his bride might be acceptable. However, Evelogia rejected her as his bride – a departure from the original game's storyline where she would have become his first sexual partner and later birthed monsters. Disgusted, she fled the forest.

Following this rejection, Tishia underwent significant change. She shed her former identity, symbolized by removing her bangs, and revealed unexpected resilience and combat skill by physically defending herself against giant crows using a shovel. Seeking a new path, she offered to assist a merchant in exchange for survival, proposing to bring in clients, carry goods, or perform any needed tasks. This shift marked her transition from a passive sacrifice to an independent individual actively rejecting the system that defined her existence. She explicitly voiced disdain for Evelogia, criticizing him as a "moody guy with an aroma fetish," cementing her break from the sacrificial role and her village's traditions.