Takumi Kaidou, Kouki Wada, and Jin Mikuriya are three friends whose ordinary elementary school field trip turns into a nightmare when their bus plunges into a lake during a violent earthquake. They survive the accident, but the experience leaves them forever changed. Twelve years later, the three have grown into young adults carrying the weight of that day. Takumi now sells his own unsettling ink drawings at a flea market, Jin appears to have remained physically a child, and Kouki seems to be the most grounded of the three. A supernatural phenomenon has twisted the boundaries between the human world and the realm of spirits, granting them the ability to see things others cannot. Their survival was not a simple stroke of luck; it tied them to a mysterious fate that continues to unfold. As they navigate their daily lives, their bond deepens, and they are drawn into a web of mystery, danger, and romance. The story alternates between the present and flashbacks to the accident, revealing the secrets of the lake and the true nature of the power that now binds them together. Their relationships are tested as they confront the supernatural forces that threaten to consume them, and the line between illusion and reality grows ever thinner.