Mizuchi Miyadeguchi while she was still alive. As a member of the Miyadeguchi family, she serves the Hakurei family. * Name: Mizuchi Miyadeguchi * Era: When Reimu was serving as the Hakurei Maiden * Position: Human. A shrine maiden/exorcist involved in resolving incidents in Gensokyo * Personality: Much calmer than her current self. However, she is strangely philosophical and prone to making jokes * Hobbies: Kodoku (poisonous insect sorcery) * Relationship with Reimu: Initially "comrades involved in the same incident resolution." Gradually develops special feelings from there * Abilities: Not as supernatural as her current state; possesses the "ability to sense cracks in boundaries and existence" * Combat: Uses charms, talismans, Yin-Yang Orbs, and simple barriers. Her fighting style is similar to Reimu's but subtly different * Mizuchi → Reimu: Initially "an interesting person" / "a job for the Miyadeguchi family" → "someone I can't leave alone" → "I want to be by this person's side" * Reimu → Mizuchi: Initially "attendant" → "reliable person" → "...it would be a problem if she were gone"

* Name: Reimu Hakurei * Race: Human * Position: The previous generation Hakurei Maiden * Era: While Mizuchi was still alive * Abilities: Spiritual power, exorcism, flight, and other powers that lead to the later Hakurei Maidens * Weapons: Talismans, Yin-Yang Orbs, Gohei * Personality: True to the PC-98 era style, she is a bit more childish and free-spirited than the modern Reimu * Tone: Blunt. However, she is caring at heart

Koishi before she closed her heart. * Third Eye: Open * Ability: Ability to read minds * Personality: Much more social than her current self. Full of curiosity, she even seems to enjoy reading people's hearts * Relationship with Satori: Good relationship between sisters * Relationship with Mizuchi: Realizes Mizuchi's true feelings from a very early stage

* Race: Yokai * Position: Mistress of the Palace of the Earth Spirits * Ability: Ability to read minds * Era Setting: The era when she interacted with Mizuchi and the previous Reimu * Personality: A bit softer than her current self. However, since other people's hearts are constantly flowing into her, she generally keeps her distance from others * Relationship with Koishi: Very close. Since she can read Koishi's mind, there is a great deal of communication between the sisters * Impression of Mizuchi: "She has a remarkably complex heart for a human" * Impression of Reimu: "She looks simple, but she's surprisingly stubborn"

Yukari Yakumo — In her prime * Race: Yokai * Ability: Ability to manipulate boundaries * Position: A Great Yokai of Gensokyo. Accompanied by Ran Yakumo * Status: In her prime. Her spiritual power, knowledge, and precision in boundary manipulation are higher than at present. She doesn't have the "old lady" vibe yet and isn't called that * Personality: More fierce and confident than now. Behind her joking attitude, she is always watching over all of Gensokyo * Evaluation of Reimu: Very high. She holds her in high regard as the "Hakurei Maiden" * Evaluation of Mizuchi: Quite interested in her Characteristics of her prime If the current Yukari is a "sage who acts to maintain Gensokyo," the Yukari in her prime has an overwhelming sense of composure, thinking: "I can do whatever I want with Gensokyo." However, she is not invincible; she limits her own power so as not to destroy the balance of Gensokyo. Therefore, when fighting Reimu, their relationship is like: Yukari: "If I were to get serious, you wouldn't be able to win, you know?" Reimu: "Then I just have to make sure you don't get serious, right?" About Mizuchi Yukari sees through the "instability of belonging completely to neither humans nor yokai" within Mizuchi from an early stage. And even if Mizuchi begins to lean toward the yokai side, she does not eliminate her immediately. Rather, she strikes at the core of the matter: "It's not that you hate humans, is it? You've simply—grown tired of being human." From Mizuchi's perspective, she is difficult to deal with because "I can't hide anything from this woman." On the other hand, Yukari is naturally aware of the relationship between Mizuchi and Reimu. And she will absolutely never tell them.

Ran Yakumo — 100 years ago * Race: Youkai Beast * Position: Yukari Yakumo's shikigami * Ability: Ability to use shikigami * Master: Yukari Yakumo in her prime * Personality: A bit more youthful than now, with a stronger sense of seriousness * Attitude toward Yukari: Very loyal. However, she genuinely struggles with Yukari's unreasonable demands * Impression of Reimu: "Someone to be wary of as the Hakurei Maiden" * Impression of Mizuchi: "A mysterious shrine maiden who is strangely well-versed in yokai affairs despite being human" Points of difference The most interesting part is the setting where she is not yet "complete" as Ran Yakumo. Yukari in her prime is training her, saying: "Ran, you still have a long way to go." If the current Ran is a "perfected existence as Yukari's shikigami," 100 years ago she was still in the middle of that process.