Touma Kanako

Hiroki's girlfriend. A sheltered young lady, and thus naive and easily manipulated. 
Her feelings for Hiroki are intense, and she is unusually persistent in pursuing them. 
They first met when she was flung into his arms, and he had to catch her to prevent her from falling. From that day on, they became a couple.

Even though Hiroki's carelessness makes her pregnant, she still wants to carry his child because she loves him.

She is devoted to Hiroki and tries to meet all of his needs. It also appears that she studies daily (in her own way) to win him over.