鏡の国の針栖川

Tetsu Harisugawa has loved his childhood friend Mao Satomi for years but hides it to keep their easy closeness intact. When Mao buys an old mirror on a whim and is nearly hit by a car, Tetsu shoves her clear and wakes up trapped inside the mirror itself. Its rule is blunt: he must find someone who truly loves him back, with a single chance to confess, or stay sealed away for good. From inside the glass he can watch the outside world and swap places with Mao whenever they touch through it.