"I Was Called Inept at Home" centers on a young protagonist, Haruto, who is constantly belittled and deemed incompetent by his family. Despite his efforts to prove his worth, he is overshadowed by his more accomplished siblings, leading to a strained and dismissive dynamic at home. Haruto’s life takes a dramatic turn when he discovers a hidden magical ability, one that sets him apart from his family and thrusts him into a world of supernatural challenges and responsibilities.

The narrative explores Haruto’s journey as he navigates this newfound power, which initially serves as a means of escape from his oppressive household. However, as he delves deeper into the magical realm, he encounters allies and adversaries who challenge his perceptions of strength and self-worth. The story balances Haruto’s personal growth with the external conflicts he faces, including battles against malevolent forces and the complexities of forming meaningful relationships outside his family.

Key characters include Haruto’s siblings, who embody the familial expectations and pressures he struggles against, and a diverse cast of magical beings who aid or oppose him. The series delves into themes of self-discovery, resilience, and the redefinition of one’s identity in the face of adversity. Haruto’s evolution from a marginalized figure to a confident individual capable of wielding his power responsibly forms the core of the narrative, while the interplay between his mundane and magical lives adds depth to the story’s progression.