Solminati Academy, where young people gather with dreams, hopes, and ambitions. Among them is a boy who entered the academy to support his lover's dreams. However, his lack of talent leads to ridicule from his peers, the loss of friends, and his lover leaving his side, causing him to stop moving forward. But a chance encounter with an old woman gradually changes the boy. This is the story of a boy whose heart has stopped moving. The author is new to writing, so any feedback on errors or areas for improvement is appreciated. The title was changed from 'The Heart Within' to 'The Dragon's Cage - The Heart Within' on December 28, 2019, for publication. In October 2020, it was decided to adapt the story into a manga. The second volume was released in October 2021. Note that this web version is mostly from before the publication decision, and there may be differences from the book version.