"A Delinquent's Life Hacks" centers on the life of a high school student, Kenta, who navigates the challenges of adolescence while balancing his reputation as a delinquent with his desire to live a more meaningful life. Kenta is known for his tough exterior and street smarts, often finding himself in conflicts with rival gangs and authority figures. However, beneath his rough demeanor lies a sharp mind and a knack for problem-solving, which he uses to help others in unconventional ways.

The story unfolds as Kenta encounters various individuals in need of assistance, ranging from classmates struggling with personal issues to strangers caught in difficult situations. Using his resourcefulness and understanding of human nature, Kenta devises creative solutions—referred to as "life hacks"—to resolve conflicts and improve their circumstances. These hacks often involve outsmarting opponents, leveraging social dynamics, or finding loopholes in seemingly insurmountable problems.

Throughout the series, Kenta's relationships with his peers evolve, particularly with his childhood friend, Yumi, who serves as a grounding influence and moral compass. Yumi often challenges Kenta to reflect on his actions and consider the consequences of his choices. Additionally, Kenta's interactions with rival delinquents and authority figures highlight the complexities of his dual identity—both as a troublemaker and a protector of those he cares about.

The narrative explores themes of redemption, personal growth, and the power of unconventional thinking. Kenta's journey is marked by moments of introspection, as he grapples with societal expectations and his own aspirations. The series balances action-packed sequences with heartfelt moments, creating a dynamic portrayal of a young man striving to redefine himself while staying true to his roots.