If "Tsf Monogatari" refers to something specific outside the mainstream Monogatari series, more details would be needed to provide an accurate and detailed overview.
The episode’s visual storytelling is stark. Flashbacks to Kaito’s apartment show: tsf monogatari episode 1 uncensored
A character magically or scientifically turning into the opposite sex. If "Tsf Monogatari" refers to something specific outside