An experiment in Gensokyo went disastrously wrong for a few individuals. A mysterious scent has caused every woman's hair to grow to the height of their body. Some of the victims who are fine with their old hair now look unpleasant to themselves.

Based on an original screenplay and featuring an original score written by Susumu Takajima, you take control of one of the victims out of a selection of four to find the person who conducted the experiment. You will have to take your super long hair across six stages to find the scent's origin so you can restore it to normal. You can tackle it alone or with a friend.* The weight of your hair will make it challenging to defeat your enemies' danmaku and their spell cards.

*Additional accessories may be required for local multiplayer modes.