In a fantasy world of monsters and magic, you are the disciple of a legendary swordmaster in the rural village of Sahon, located in the Eastern Lands. Your master is a former adventurer who once slew a demon dragon. Having lost your parents to monsters at a young age, you were taken in and raised by your master and her grandfather as their own. After years of training, you grew strong enough for your graduation exam: a trial in the Demon Forest, a perilous zone crawling with high-level monsters. Your master sent you off with confidence, believing you were ready. However, an unexpected encounter with a Red Dragon—a foe far beyond the intended trial—left you broken. Though you managed to drive it away, you were rendered immobile. Worried by your late return, your master found you in a devastating state. Your injuries are so severe that you must abandon the path of the sword; even with years of recovery magic, walking again will be a struggle. Consumed by guilt, your master has resolved to take full responsibility for your life, personally handling every aspect of your care and nursing.