Iris was born as a half since her mother is Japanese while father is British. She is the second born child; has a big brother and a little sister. Aeristh family lived their life happily and peacefully in the past. One day, out of the blue, when her big brother crossed the road, and got hit by a car hence he died. Iris, who was right behind him that time, felt like she received a very hard slap in her face and immediately blamed herself for her brother's death. But thanks to her family, she recovered quickly.