Koutei Penguin ga Tonda Sora

is a Japanese light novel series written by Ryuji Matsuki, with illustrations by K Aniki. The series began publication on November 10, 2006 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
A former bad girl, Liserotte, who grew up in an orphanage, works as a caretaker at the pure white old castle "Swan Castle". She is Liserotte struggling to become the goal of the orphanage children. Watching her were the kind-hearted people of the city and the cheerful ghosts who lived in Swan Castle. One day, Johanna, a girl who grew up like a sister in an orphanage, appears in front of Liserotte. She seems to be in trouble. "Do you think I can go to the heart I want to go to?" "I thought I could go anywhere," a healthy ex-bad girl, caring city people, and lovable ghosts unfold. Heart warming story.