Steins;Gate (2011)

S1E9 Chaos Theory Homeostasis II

Okabe begins to worry as the consequences of his experiments spiral out of control, altering reality in unsettling ways. To make matters worse, the IBN-5100 vanishes from the lab without a trace. Their only chance at recovering a replacement lies with Feyris, the cat-eared girl, whose fragile presence may hold the key to setting things right.