Nekomonogatari: Kuro

Soon after the vampire incident, Koyomi Araragi notices that Tsubasa Hanekawa is hiding severe stress behind her usual calm smile. A wound on her face that she dismisses as something from home only increases his concern, and the two later bury a dead white cat found by the roadside. Meme Oshino warns Araragi that the animal was a supernatural being capable of exploiting pressure buried inside a person. When Hanekawa disappears and a catlike girl begins attacking people to drain their energy, Araragi realizes that the friend who always appears perfect has been carrying far more pain than she lets anyone see. Saving her requires more than defeating an apparition; it means confronting how dangerous it is for Hanekawa to keep enduring everything in silence.