Touhou 12.3: Hisoutensoku - Chase the Enigma of the Gargantuan Guignol

A mysterious giant is seen wandering around Gensokyo. It can suddenly appear and can just as suddenly vanish seemingly without a trace. Everyone who sees it becomes curious and wonders about the truth behind this strange sight. Sanae Kochiya, Cirno, and Hong Meiling each have their own fears and dreams about the giant, and each sets out in pursuit of this roaming behemoth.

Exploring the Forest of Magic, the Scarlet Devil Mansion, and other locations in Gensokyo, the heroines face many challenges and obstacles in their pursuit of a mystery that's far deeper than it first appears.