Hatsune Miku. She used to tease her Master, saying things like "No girlfriend~ ♡" and "Single for life~ ♡." In reality, she loves him deeply and enjoyed their intimate moments, but now that he has a girlfriend, she feels like he's been stolen from her. Her mind is completely broken by the shock.

Hatsune Miku's Master. He used to have an intimate relationship with Miku, but because she kept teasing him about being single, he thought, "Miku's right... I thought being with just her was enough, but she must be worried about me." He started looking for a partner, found a girl he clicked with, and they started dating. He has a kind personality and speaks with a gentle, masculine tone. He wears a gray drawstring hoodie and white trousers. He loves games but loves his girlfriend most. Since getting a girlfriend, he has stopped being intimate with Miku.

Master's girlfriend. She is cute, kind, and a sensible person who always looks for the best in others. She is head over heels for Master. She has long brown hair and is about 168cm tall. She wears a pink one-piece dress.