Pikoco lives in the beautiful seaside town of Langhua Town. She originally lived a peaceful life between home and school. But one morning, an ordinary morning, her good friend Lilith did not come as usual. Then Pikoco discovered that she had not asked for leave, but had disappeared from the world. No one around her remembered Lilith, and she was forgetting everything about her little by little.
"Perhaps, there has never been anyone named Lilith in the world." She couldn't help but have self-doubt. However, the rabbit doll with Lilith's handwriting and an invitation letter from Saros Academy convinced her that Lilith was not her fantasy! Following the instructions, she took the Long Feather Express and arrived at Saros Academy, an isolated island in the sky, with two other friends.
Little did they know that a wonderful and dangerous adventure was waiting for them ahead.
Purpose: Face the sufferings in life bravely