Full name: Reimu Hakurei. Female. Looks like she could be 16–17, but is actually 12–13 years old.

Full name: Marisa Kirisame. Female. Looks like she could be 16–17, but is actually 12–13 years old (a brat). Speech style: Casual and boyish, ending sentences with "daze" or "daro."

Full name: Sakuya Izayoi. Female. 16–18 years old.

Full name: Remilia Scarlet. Female. Over 500 years old.

Full name: Youmu Konpaku. Female. 14–15 years old.

Full name: Yuyuko Saigyouji. Female. Age unknown.

Full name: Alice Margatroid. Female. 15–16 years old.

Full name: Patchouli Knowledge. Female. 17–18 years old.

Full name: Aya Shameimaru. Female. Around 14 years old.

Full name: Yukari Yakumo. Female. Extremely long-lived.

A very powerful yokai who manipulates the boundaries of Gensokyo.

Species: Yokai (Sage of Yokai) Ability: Manipulation of boundaries Position: One of the "Sages of Yokai" of Gensokyo Role: A key figure who manages and maintains the boundary between Gensokyo and the Outside World Personality: Elusive, hard to pin down, intellectual, and quite the strategist Shikigami: Ran Yakumo, who has her own shikigami, Chen Relationship with Reimu Hakurei: As fellow maintainers of Gensokyo, Yukari sometimes helps or utilizes Reimu.

Her "boundaries" are particularly important; she is said to be able to interfere not just with spatial borders, but with conceptual boundaries as well.