In the mid-winter night's breeze with their tattered kimono and nowhere to go, the orphans huddled closely together.

"Let's be together, forever and ever."

That was the promise they had sworn to.

They now stood before the courtesan house they had stumbled upon. Rin and Miku had met an older oiran behind the streets of Yoshiwara, the oiran promised them shelter and food if they were to join the Rain Dream House and train to become a courtesan. Desperate for some sort of escape from their five years of struggle to stay alive, the blonde and blue-haired children accepted the offer without a hint of hesitation.

The oiran, Luka, slid open the door and called for the owner. The old wrinkled owner scrutinized the two girls from head to toe with a piercing look of judgment before muttering for them to get inside the house.

Luka handed the young girls each a new set of kimono. Rin and Miku stared at the kimonos in their dirty and wounded arms. So pristine, so clean, nothing they could have ever imagined. The owner showed them to a small room where they would stay then told them to take a shower and thoroughly clean themselves.

"From now you'll be Luka's helpers and apprentices. Don't do anything stupid, serve her and learn well for she is the best oiran in this house."

The orphan girls had found a new place to belong to.

It didn't take them long to get used to the flow of the day in the house. They'd wake up, dress in proper clean clothing, then help Luka get ready for the day. It might have been tough at the beginning having to wake up early, do chores, attend lessons and training, serve their elder sister Luka but they are well-clothed, well-fed, have a roof over their heads and couldn't ask for more.