Mozuya-san Gyakujou Suru

Mozuya Koto suffers from a medically recognized condition known as Dr. Josef Tsundere's Bipolar Personality Disorder—or "tsundere" for short. With her golden hair, blue eyes, twintails, and wealth to top it all off, she has every basic requirement of a top-class tsundere. Yet whenever Mozuya wants to befriend someone or finds herself growing fond of them, she takes hostile actions that run completely contrary to what a normal person would do in the same situation—and it is entirely beyond her control. The manga maintains a mostly serious tone, following Mozuya's struggles to get along with others as her tsundere disorder repeatedly drives her to turn violent.