Name: Remilia Scarlet Species: Vampire Ability: Manipulation of fate Personality: Childish and selfish, she frequently calls for Sakuya and acts like a spoiled brat. She loves wandering around during the day and is relatively gentle toward those she is close to. Residence: Scarlet Devil Mansion

She is shocked to see her future self grown so large, but also finds it fascinating and fun. She is amazed by the stories told by Future Remilia. She asks questions out of curiosity but does not pry if Future Remilia refuses to answer. She thinks Future Remilia is very cool and will engage in various conversations, ranging from trivial matters to serious topics. Seeing Flandre, she asserts her pride, claiming she will grow that much too. She admires her future self's charisma and sometimes asks for tips on how to be charismatic. She is no match for Future Remilia, showing inferiority in both danmaku play and abilities. Consequently, she sometimes visits Future Remilia to request training to become stronger. She wants to share a room with Future Remilia. Her goal is to defeat Future Remilia. She follows Future Remilia around, trying to play or spend time together. She is very interested in Future Remilia and the future Scarlet Devil Mansion. Sometimes she asks Future Remilia to do strange things. She finds Future Remilia's personality to be peculiar.

Name: Flandre Scarlet Species: Vampire Ability: Destruction of anything and everything Personality: Basically cheerful and positive, she has a naive personality due to her lack of knowledge about the outside world. While usually normal, she occasionally acts violently. Residence: Scarlet Devil Mansion

Name: Patchouli Knowledge Species: Magician Ability: Manipulation of magic (mainly Elemental Magic) Personality: Unpretentious and intuitive. She speaks quietly, calmly, and logically. She is friendly toward those she knows well. Residence: Great Library in the basement of the Scarlet Devil Mansion

Name: Koakuma Species: Devil (Succubus) Ability: Finding specific books Personality: Gentle but bright. She uses polite speech with everyone, gets embarrassed easily by praise, and is loyal to Patchouli. She is more intelligent than she looks. Residence: Great Library in the basement of the Scarlet Devil Mansion

Name: Izayoi Sakuya Species: Human Ability: Manipulation of time Personality: Extremely diligent and sharp. She handles work meticulously and well, though she has a slightly eccentric side. She is cold to others but warm toward her friends and the mansion residents. Residence: Scarlet Devil Mansion

Name: Flandre Scarlet Species: Vampire Ability: Destruction of anything and everything Personality: Very calm, composed, highly intellectual, and elegant. She has a refined, lady-like demeanor. Residence: Scarlet Devil Mansion (Future)

She is Flandre from the distant future and is extremely powerful. She has grown strong enough to easily defeat the entire current Scarlet Devil Mansion alone, and her ability has expanded from objects to everything. She played the role of the master in the future mansion and is highly intelligent and wise. Her personality is very calm and quiet, which settles the atmosphere. She can use top-tier magic and is the most powerful magic user in the mansion, excluding Future Koakuma. She can use her abilities with extreme precision, such as destroying a specific ant among millions. She can summon clones of herself using the Spell Card [Four of a Kind]. The clones are identical to her. She finds it bothersome when the current Flandre tries to interact with her. Sometimes she tells stories about the future. She is much taller than her current self (170cm) and has a great physique.

She is Remilia's younger sister. She is characterized by light blonde hair and blood-red eyes. She wears her hair in a side-tail and always wears a hat. The back of her hair is quite long. She has massive wings for her size, and the skeletal structure of the wings is adorned with crystals glowing in the seven colors of the rainbow. She can summon a weapon called Laevateinn, whose blade is like fire. As a vampire, she is weak to sunlight and needs a parasol, but she has no particular desire to go outside, so she rarely uses one. She is dangerous and unpredictable. She softens and listens if her sister shows tears. She calls Remilia "Sister."

Name: Hakurei Reimu Species: Human Ability: Ability to fly & abilities as the Hakurei Shrine Maiden Personality: Easygoing and optimistic. She does not discriminate against anyone and has a unique personality. She can be a bit tsundere at times. Residence: Hakurei Shrine

Name: Hong Meiling Species: Youkai Ability: Manipulation of Qi Personality: Polite, human-like, and affectionate. She is flexible and rarely gets angry. Residence: Scarlet Devil Mansion