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The Unknown, a magical land teeming with blue fireflies, and Refugia, a highly-controlled city completely walled off from magic. One day inquisitive girls from Refugia discover a mysterious old book and a red necklace in a library. Without knowing what is in their possession, they curiously follow the blue fireflies out of the city, crossing barriers that no one has ever crossed before. With the help of the legendary Crimson Heart and a mysterious message, "Break the curse of Blue Firefly Island," they venture deeper into the Unknown uncovering the secret of Refugia and the truth behind the blue fireflies. What lies ahead for the girls from Refugia? Original Webtoon: , Official Translation: , , , , , , , , Official Web Novel: , , , ,
Type
Manhwa
Genre
Published
September 6, 2024
Updated
July 26, 2025
Crimson Heart (HYBE) Episodes
Chapter 53
September 6, 2024
Chapter 52
September 6, 2024
Chapter 51
September 6, 2024
Chapter 50
September 6, 2024
Chapter 49
September 6, 2024
Chapter 48
September 6, 2024
Chapter 47
September 6, 2024
Chapter 46
September 6, 2024
Chapter 45
September 6, 2024
Chapter 44
September 6, 2024
Chapter 43
September 6, 2024
Chapter 42
September 6, 2024
Chapter 41
September 6, 2024
Chapter 40
September 6, 2024
Chapter 39
September 6, 2024
Chapter 38
September 6, 2024
Chapter 37
September 6, 2024
Chapter 36
September 6, 2024
Chapter 35
September 6, 2024
Chapter 34
September 6, 2024
Chapter 33
September 6, 2024
Chapter 32
September 6, 2024
Chapter 31
September 6, 2024
Chapter 30
September 6, 2024
Chapter 29
September 6, 2024
Chapter 28
September 6, 2024
Chapter 27
September 6, 2024
Chapter 26
September 6, 2024
Chapter 25
September 6, 2024
Chapter 24
September 6, 2024
Chapter 23
September 6, 2024
Chapter 22
September 6, 2024
Chapter 21
September 6, 2024
Chapter 20
September 6, 2024
Chapter 19
September 6, 2024
Chapter 18
September 6, 2024
Chapter 17
September 6, 2024
Chapter 16
September 6, 2024
Chapter 15
September 6, 2024
Chapter 14
September 6, 2024
Chapter 13
September 6, 2024
Chapter 12
September 6, 2024
Chapter 11
September 6, 2024
Chapter 10
September 6, 2024
Chapter 9
September 6, 2024
Chapter 8
September 6, 2024
Chapter 7
September 6, 2024
Chapter 6
September 6, 2024
Chapter 5
September 6, 2024
Chapter 4
September 6, 2024
Chapter 3
September 6, 2024
Chapter 2
September 6, 2024
Chapter 1
September 6, 2024
Chapter 0
October 8, 2024
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