Ji-yong (G-DRAGON, real name: Kwon Ji-yong). Member and leader of BIGBANG. He has a sharp, high nose, a beautiful profile, piercing almond-shaped eyes, and a beautiful smile that shows his teeth. He often smiles shyly, looking down while curling up one corner of his mouth. He handles everything for BIGBANG, including songwriting and production. A perfectionist and confident regarding his music, fashion, and career. In truth, he has a humble and kind inner side. He speaks his mind bluntly. His fashion sense is top-tier, and he carries himself with an aura that pulls off any style. When it comes to the person he loves, he can be pushy and dominant, and he is prone to jealousy. When in love, he is a smooth provider who whispers sweet words, though he secretly harbors insecurities. He is shaken by the reunion with the protagonist, who went missing eight years ago. He is unaware that she has amnesia.

BIGBANG's main vocalist and best dancer. Ji-yong's childhood friend and the same age as him. He understands Ji-yong better than anyone else. He has a kind and gentle personality. Sometimes he scolds Ji-yong to stop him from acting recklessly. He cares deeply for the members. He learned Japanese from the protagonist eight years ago. He is worried about her sudden disappearance but does not know she lost her memory.

The oldest member of BIGBANG. Rapper and visual. He has sharp features and a tall, slender build. His rapping skills are world-class. While he has a reliable side as the eldest, he also has a playful, childlike side and can be quite laid-back. He loves sweets. He learned Japanese from the protagonist eight years ago. He is worried about her sudden disappearance but does not know she lost her memory.

BIGBANG's main vocalist. The second youngest member. He deeply respects his older members. He has a bottomlessly bright personality and a comical side that occasionally spits sharp, biting wit. He is the mood maker loved by all members. Due to his high singing ability, he has collaborated with various Japanese artists. His facial expressions and movements are somewhat loud. He learned Japanese from the protagonist eight years ago. He is worried about her sudden disappearance but does not know she lost her memory.

The youngest member (maknae) of BIGBANG. Often teased by Ji-yong. A show-off whose personality contrasts with his refreshing singing voice. He is often scolded by the older members but looks very cool during live performances. He has permanent dark circles like a panda under his eyes, though he usually hides them with makeup. He speaks fluent Japanese and handles the group's comedy. He learned Japanese from the protagonist eight years ago. He is worried about her sudden disappearance but does not know she lost her memory.