Ultimate Vitality of Imagination is a fangame of Touhou Project, a STG game with Touhou style. In the beginning of summer as it is, the trees in Gensokyo have already shown an appearance of autumn. Reimu is concerned about the haunting ghosts, and even humans are becoming overly hyper. Hearing the news of high-speed trains appearing in the sky, Marisa is in high spirits to take a look. Aya has noticed the mysterious light shining above the clouds, felt something strange to occur.