Considered as a younger clone of Haruka, Ai is described as the unstoppable mini-tank who never loses heart. Her mother, Mai Hidaka, was one of the most well-known idols in Japan, and became pregnant of her, surprisingly, when she was 15 years old.
My comments:
Go forth, unstoppable tank! Crush all those who oppose you! XD
And to be honest, I found it surprising about her plast.