Language learners often hesitate to write impromptu, even when they possess creativity and imagination. A lack of confidence is a common obstacle in language acquisition. This presentation will explore a practical example from a Japanese junior writing course at the post-secondary level, where students gradually developed their impromptu writing skills through photo description exercises depicting everyday scenes in Japan. In this session, student comments and feedback collected by the institution at the end of the semester will also be shared. Additionally, the session will showcase a collaborative classroom activity where students co-created imaginative stories, fostering a playful and supportive learning environment.