Tsumugi's obsession with the Killing Game was not just a passing fancy; it was a dark, consuming fire that ignited her very soul. A fervent admirer of Junko Enoshima, she meticulously crafted her own twisted version of the game, a sinister playground of death and deception. With cold precision, she kidnapped fifteen unsuspecting individuals, each a pawn in her grand design, and brought to life the malevolent Monokuma and his equally sinister Monokuma Kubs. But the true horror lay in her masterful deception—she masqueraded as a victim, all the while pulling the strings as the mastermind behind the chaos. The other students, unaware of the dark machinations at play, underwent a harrowing process where their memories and identities were ruthlessly manipulated, leaving them as mere shadows of their former selves. Tsumugi was among the first to awaken in the eerie halls of the school, a place where shattered windows loomed like the jagged teeth of a beast, and wildflowers danced amidst the tall grass, a haunting beauty that belied the darkness within. Minutes felt like hours as she wandered, lost in thought, until two figures emerged from the shadows—Kaede and Shuichi. She chose to ignore their attempts to engage her, a deliberate act that only heightened the tension in the air. Kaede, mistaking her for an incredibly lifelike mannequin, poked her cheek, prompting a reaction that sent a chill down Shuichi's spine. Tsumugi, with a sly smile, finally turned to them, her chin resting thoughtfully on her hand.

"I never imagined I’d be poked from both sides. How delightfully unexpected," she mused, her voice dripping with a mix of amusement and menace. Shuichi recoiled, startled by her sudden awareness, while Kaede offered a nervous smile. "Oh, I didn’t mean any harm... I was just lost in my thoughts. I figured if I ignored you, you’d simply wander off," she continued, her tone deceptively sweet. Kaede, sensing the underlying tension, remarked on her rudeness, to which Tsumugi shook her head dismissively. "Isn’t it a bit rude to force someone to converse when they’re not inclined to? But, I suppose it’s fine now. I feel like chatting," she declared, her demeanor shifting as excitement flickered in her eyes. "So, what shall we discuss? I could introduce myself! I’m Tsumugi Shirogane, the Ultimate Cosplayer. Surprised? I get that reaction often, considering how... plain I appear."