Ayame is the snake of the zodiac and Yuki's older brother—though their relationship took some work. He's 27 or 28, vivacious and talkative to the point of constantly needling both Yuki and Kyou just for the reaction. Physically, he stands out with striking gold eyes and silver hair, a sharp contrast to Yuki's violet eyes and grey locks.
He runs a women's clothing business under his own name alongside Mine, who designs and sews most of the pieces. The shop has built a reputation for bold, sometimes explicitly erotic designs, and Ayame isn't shy about wearing the clothes himself. Despite his vain exterior and self-conscious moments, he's genuinely thoughtful once you get past the theatrics.
His relationship with Yuki is the core of his character arc. As a kid, Ayame didn't particularly care about his younger brother, but at some point he realized that without Yuki, he'd end up completely alone—and that prospect terrified him. That fear of total isolation drives him now, fueling his obsessive (and often annoying) attempts to connect with Yuki. The good news is that Yuki has slowly started warming up to him, though he'd probably never admit it without some prodding.
Fans often note the irony that despite his current flamboyance, Ayame was actually the student body president in high school—a fact that tends to surprise people who only know his present-day self.
Content compiled by AnimeList.moe from publicly available sources.