I am Sakuya: Touhou FPS Game

A mysterious mansion has suddenly appeared in Gensokyo. With the shrine maiden insistent on sitting this out until something happens one of the legendary humans, Sakuya Izayoi, decides to investigate. She gears up and exits the human village towards the mansion, unbeknownst to her that this is the start of her new life...

Résumé

Dodge bullets, shoot enemies and even stop time as you navigate through 10 beautiful levels in this perfect blend of bullet hell and FPS. Uncover the origins of Sakuya Izayoi's past and investigate the mansion where the scarlet vampires resides in this Touhou Project Fangame!