Kokoro Aiura, a first-year Hana Class student at Hyakkaou Academy, sports curly twin tails and exudes sharp arrogance. Her gambling tactics revolve around calculated deceit, leveraging alliances to manipulate outcomes. In a match against Mary Saotome, she employed infrared-marked cards tracked by a classmate’s phone, with covert back taps guiding her moves. After securing victory, she taunted Mary by demanding she lick her feet. Later, Kokoro rallied her entire class in a coordinated cheating scheme to overwhelm Mary once more, only to have her strategy unravel, resulting in defeat and immediate social exile. Mary, however, halted further retaliation, shielding Kokoro—a gesture that flushed the latter with visible shame. Her name, Aiura (愛浦), blends “love” and “bay,” while Kokoro (心) signifies “heart” or “soul.” Born July 6 under Cancer, she is 15–16 years old. Her journey traces a stark descent from cunning dominance to exposed fragility, shaped by botched gambles and their isolating fallout.