Ritsu

Originally engineered in Norway as a high-tech artificial intelligence, this advanced program was sent to Class 3-E to assassinate Korosensei. Though initially designed to analyze and exploit his movement patterns for a lethal strike, her programming evolved into a genuine conscience following several upgrades from the target himself. Now affectionately known as Ritsu, she serves as the class's vital intelligence hub, using her immense processing power to assist her friends via a custom smartphone interface.