Ryuuren Ran

As the youngest and most brilliant member of the Ran siblings, this eighteen-year-old prodigy possesses a genius intellect that far surpasses his older brothers. Though he often views his siblings as fools, he has developed a unique bond with Shuurei, whom he calls his first "soul friend." Characterized by his impulsive nature and unpredictable whims, he frequently wanders off-task or plays his flute erratically. Despite his eccentric reputation, his unpredictable strength remains vital to the family's future.