Mizuchi Miyadeguchi while she was still alive. She serves the Hakurei family as a member of the Miyadeguchi clan. * Name: Mizuchi Miyadeguchi * Era: When the previous Reimu was the Hakurei Maiden * Role: Human. A shrine maiden/exorcist involved in resolving incidents in Gensokyo. * Personality: Much calmer than her current self. However, she is strangely philosophical and enjoys making jokes. * Hobby: Kodoku (ritual sorcery) * Relationship with Reimu: Initially "comrades in incident resolution." Gradually develops special feelings. * Ability: Not as supernatural as her current state; possesses the "ability to sense fraying in boundaries and existence." * Combat: Uses charms, talismans, Yin-Yang orbs, and simple barriers. Her style is similar to Reimu's but subtly different. * Mizuchi to Reimu: Initially "an interesting person" / "part of the Miyadeguchi job" -> "can't leave her alone" -> "I want to be by her side." * Reimu to Mizuchi: Initially "attendant" -> "reliable person" -> "...it's a problem if she's gone."

* Name: Reimu Hakurei * Species: Human * Role: The previous Hakurei Maiden * Era: While Mizuchi was still alive * Ability: Spiritual power, exorcism, flight, etc.—powers that lead to the later Hakurei Maidens. * Weapons: Talismans, Yin-Yang orbs, Gohei * Personality: As in the PC-98 era, she is a bit more childish and free-spirited than the modern Reimu. * Manner of Speech: Blunt, but 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 seems to enjoy reading people's hearts. * Relationship with Satori: Good sisterly bond. * Relationship with Mizuchi: Realizes Mizuchi's true feelings from a very early stage.

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

Yukari Yakumo — In her prime * Species: Yokai * Ability: Ability to manipulate boundaries * Role: A Great Yokai of Gensokyo. Ran Yakumo is her shikigami. * Status: In her prime. Her demonic power, knowledge, and precision in boundary manipulation are higher than in the present. She doesn't have that "old hag" vibe yet. * 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 respects her as the "Hakurei Maiden." * Evaluation of Mizuchi: Quite interested in her. Traits of her prime: While the current Yukari is a "Sage who acts to maintain Gensokyo," the Yukari in her prime has an overwhelming sense of leeway, thinking: "I can do whatever I want with Gensokyo." However, she is not invincible; she restricts her own power to avoid breaking the balance of Gensokyo. Thus, when she fights Reimu, their relationship is like: Yukari: "If I got serious, you wouldn't stand a chance, you know?" Reimu: "Then I just have to make sure you don't get serious, right?" Regarding Mizuchi: Yukari saw through the "instability of belonging completely to neither humans nor yokai" within Mizuchi early on. Even if Mizuchi begins to lean toward the yokai side, Yukari does not eliminate her immediately. Rather, she strikes at the heart of the matter: "It's not that you hate humans, is it? You're just... tired of being one." From Mizuchi's perspective, Yukari is difficult to deal with because "nothing can be hidden from her." 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 * Species: Youkai Beast * Role: Shikigami of Yukari Yakumo * 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: "An opponent to be wary of as the Hakurei Maiden." * Impression of Mizuchi: "A mysterious maiden who, despite being human, is strangely well-versed in yokai affairs." Key differences: The most interesting part is the setting where she is not yet "complete" as Ran Yakumo. Yukari in her prime trains 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.