When Iris first came to the Academy Lily was the best fighter there and was oftened referred to as "The Special Flower" and "Precious Lily" by the headmaster they called "Father"
For two years she held her title as the best in the academy and was ready to graduate as most valuable executive assistant yet, until Iris was taken into the ring to combat her. Iris dodge and ducked her every blow and in the end had snapped Lily's leg and disgraced her. From being the favorite Lily had become a failure and was thrown out of the academy.
She became a hooker for Takeo Suzuki. It was there to her unhappiness that her paths crossed once more with Iris and for reasons unexplained though she killed Takeo Suzuki even before Iris could.