Height
170.00 cm
Weight
54.00 kg
Kaga Kouko is the main female protagonist in Golden Time. She is shown as a girl with devoted nature. Through out the series she pursues person of her affection single minded, which often gets to the point of stalking the person or being too clingy to them. She admits in front of Banri that she is aware that her this very nature seems to bother others, but she can't change herself. Kōko is also shown as a person with confidence when confessing her love and hold herself in high esteem for being a good girlfriend.

Golden Time
Due to a tragic accident, Banri Tada is struck with amnesia, dissolving the memories of his hometown and past. However, after befriending Mitsuo Yanagisawa, he decides to move on and begin a new life at law school in Tokyo. But just as he is beginning to adjust to his college life, the beautiful Kouko Kaga dramatically barges into Banri's life, and their chance meeting marks the beginning of an unforgettable year. After having a glimpse of college life, Banri learns that he is in a new place and a new world – a place where he can be reborn, to have new friends, fall in love, makes mistakes and grow. And as he begins to discover who he was, the path he has chosen leads him towards a blindingly bright life that he will never want to forget.