I am shadow and you're

Mayon has mastered one thing: invisibility. At sixteen, her life is a constant, isolating zero. She's the girl who chooses silence over defending herself, always taking the blame just to preserve a shred of dignity. She craves friendship, but her immense self-respect only leaves her isolated and hurt. Then she finds Shadow, a heavy, ancient diary that demands to be written in. Shadow is judgmental, terrifyingly honest, and promises to guide Mayon out of her non-existence-if she follows the strict rules of the bond. With Shadow's guidance, Mayon learns to make her first real friend, Harika, and begins to confront the judgmental gaze of the handsome, popular Shritik. But the diary is not a comforting magical tool; it's a demanding master. When Mayon breaks the one rule meant to protect her, the consequence is swift, painful, and leaves a mark-a crimson slash across her skin. The diary saved her from being nothing, but if she can't prove her worth, Shadow might make her less than zero. Who is Shadow? Is he her guide or her tormentor? And how high is the cost of being truly seen?