Yui Narumi

Yui Narumi first crossed paths with Kō during their shared days in Nagasaki, where both were quietly carrying the grief of losing their parents. This mutual wound became the foundation of a deep, unspoken bond between them. When Kō eventually returned to his hometown, Yui reappeared in his life—leveraging their shared sorrow and her own vulnerability to draw him close, desperately trying to keep him by her side. Her presence stands as the central emotional obstacle standing between Kō and Futaba's budding relationship.