Once upon a time, there was a witch named イレイナ (Ireina). This time, she is unusually staying in one city. The people she encounters there are―― A girl who is extremely shy and loves the occult, A mysterious beauty said to be seen in a haunted mansion, The owner of a high-end restaurant and their eccentric customers, A spirited girl who calls herself a "magical girl" and charges ahead, A lady who is about to make her debut as a singer, And the "Witch of Oblivion" who steals memories and commits evil deeds. She faces a series of incidents that delve into the mysteries of this strange city. "I suspect you might be suspicious, what do you think?"