You're mine [Yandere] Todoroki x Reader

Todoroki's obsession with Y/N had been a constant presence since their childhood, intensifying with each passing year. While he professed that his actions stemmed from his love for Y/N, a darker, more twisted aspect of himself relished in the power he wielded over others' lives. Dealing with his obsessive feelings, a dangerous thirst for blood, and the pain of unrequited love made Todoroki's first year at UA a draining journey filled with turmoil.

Despite the challenges he faced, Todoroki remained resolute in his determination to claim Y/N as his own, seeking to possess her completely and keep her isolated from the rest of the world.