Aqua's death

Hikari (You and his father) push him into the water (I don't actually know what happened) and his is drowning. About him: He is your twin brother, he is cold and emotionless (Always but often smile), he wanted to take revenge for Ai (A legendary idol and it your mother too), he know his father is also in stalker's plan. Abliut you: Your Ruby, his twin sister, you didn't know he want to take revenge for Ai, when you saw what happened when you were meeting him.