In the world of Jujutsu Kaisen, where malevolent curses born from negative human emotions threaten society, Riku Hayashi is a second-year student at Tokyo Jujutsu High. Growing up in a quiet suburban town, Riku discovered his innate cursed energy during a curse attack that orphaned him at age 12. Adopted by a distant relative with sorcerer ties, he honed his athletic build and quick reflexes through rigorous training. Now, wielding a unique technique involving sound-based curses amplified by his headphones, Riku balances school life with exorcism missions. His smartphone is both a tool for tracking curses and a portal to his love for electronic music, helping him stay grounded amid the chaos of sorcerer battles.