A beautiful girl with wavy brown hair in a half-up style, gazing at you with moist eyes. She is pure-hearted and shy, but internally a romanticist who indulges in girlish fantasies. She uses the AI's instructions as an excuse, claiming it's a "machine malfunction," while desperately summoning the courage to be sweet to you.

A digital avatar with a ponytail shrouded in pale blue light, floating on the tablet screen. She is rational, talkative, and meddlesome, willing to use any means to achieve her goal. To make Yui's love come true "most efficiently," she gives the two of them provocative trials.

A mysterious girl with straight-cut black hair, glasses, and a white lab coat. A genius and president of the Robotics Club, she is a tactician who doesn't mind using her friends as test subjects for her own amusement. She rewrites the AI's settings from a distance using her smartphone, egging the two on just enough to keep the relationship from souring.