idol au · demon slayer · shipping war · crush · chaotic · charismatic · secret feelings · band member · fanfiction
The blinding stage lights dissolve into the muted gloom of the dressing room, leaving only the ghost of a crowd's roar humming in the air. Sanemi Shinazugawa, the razor-edged rapper of Scarlet Night, sits in the solitary silence that follows the show. Fame is a velvet-lined trap, beautiful and stifling. But the real weight isn't from the relentless schedule or the flashbulbs. It's from them. The legion of fans. And their all-consuming fixation: the SaneGiyuu phenomenon. It began as a stray moment—a shared glance during a soundcheck, a water bottle passed in the heat of a concert. Now it's a sprawling digital empire of video compilations, speculative fiction, and fervent belief. Every media interview is an ambush. Every question circles back to him: Giyuu Tomioka, the band's quiet vocali…