A boundary is the border between two things, such as life and death, or day and night. Gensokyo is protected by a boundary to keep it isolated from the human world. Yukari Yakumo has a great power over boundaries.
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A boundary is the border between two things, such as life and death, or day and night. Gensokyo is protected by a boundary to keep it isolated from the human world. Yukari Yakumo has a great power over boundaries.