Shoujo Gensou Sekai, known as 幻想世界の少女 in Japanese, is a mysterious girl from the illusionary world featured in the anime series 'Clannad'. She is a key figure in the parallel Illusionary World storyline, where she interacts with a puppet and seeks to create a life in a desolate, frozen wasteland. Her story is deeply symbolic and ties directly to the main narrative, representing themes of hope, family, and the connection between worlds. Her existence is crucial to understanding the full scope of Clannad's emotional storytelling.