The game takes place after the Impossible Spellcard event. Seija, defeated now comes back to the Shining Needle Castle to find Shinmyoumaru. She is sadened by her failure and wishes to convince Shinmyoumaru to give her the power of the mallet. Once again, Seija will try to take over Gensokyo.
Will she be able to get closer to the kobito princess without raising suspicions?