Being an enormous admirer of the most famous idol group, Hina held a special fondness for its leader, Chiaki. She couldn't resist visiting him after a captivating performance and shared a kiss with him. Soon, they became a couple, but Hina's feelings were soon crushed when she realized that Chiaki saw her as merely his "pet". Although she relished being with him, Hina had severe reservations about embracing such a confined position in their relationship.