A girl named Sui has an unusual disease that causes pain in her eyes whenever she sees light. She has to be locked in a pitch black shed that has no light in it. A boy named Biki helps Sui by removing bandages, giving her food, and just talking to her. Biki's mother is worried about him getting the illness, so she tells him not to stay as long as he normally would with Sui. One day while Biki is talking to her, she tells him why she has that illness: There are Mushi in her eyes. Biki continues to take care of her until one night when he is reading by a candle, a strange pain comes to his eyes.

Ginko hears a rumor around town that a man is has prophetic dreams every once in a while. He suspects that Mushi are living in his dreams. He gives the man medicine to keep them under control and says he will come back when he has used about all of them. When Ginko returns, the village is deserted and torn up. Ginko finds the man alone in is house. The man then tells him about what happened while he was away.

Ginko is waiting along the sea shore, for a transport to get him across the bay when he meets a man called Shirou, who lost his wife under strange circumstances. Ginko seems interested and decides to listen to his story about how he lost his wife in a swarm of sea snakes, during fog. Ginko later comes back with information on the Mushi that caused the bizarre events.

Just managing to cross the treacherous Kazura Bridge, Ginko meets up with a man on the other side who takes him to meet a lady called Hana, who fell from the same bridge 3 years ago. Even though Hana survived, all she does is sit under the sun and nothing else and nobody seems to know what's wrong with her. Hana is feared to be a "Tanimodori", which are people whose minds and memories are wiped clean and they die on the night that the "One Night Bridge" shows up. From the info gathered Ginko knows that Hana is possessed by a Mushi called a "Nisekazura".

"When all are sheltering within, there comes an imitation of spring. Linger in bliss for too long and your flesh will soon be frozen..."

Caught in a blizzard, Ginko is decides to look for shelter and finds a home where the owner, Suzu allows him to stay the night. The next day Ginko sees a boy, Miharu who seems to be fascinated by Mushi. Ginko learns that Miharu once disappeared into the mountains in the winter and then suddenly came back in spring, able to see Mushi. Miharu has been repeating this since and it may be caused by a "Harumagari" so in the end, Ginko decides to teach him more about Mushi.

Ginko arrives at a secluded place, to meet an old acquaintance, who seems to be in charge of a large volume of archival, confidential text. Ginko is allowed to read it, and discovers it is the work of Tan'yu, a writer. Tan'yu is the descendant of the Karibusa family, being born with a black mark on a part of their body.

A lady named Aki discovered a green stain on her wedding gown, one year later she gave birth to a boy who, now grown up, has the same marks on his body. It turns out that the boy was originally born not as a human but as some shapeless green blob, which then turned into a human. Her husband asks for Ginko's help yet he is unable to save her son because it's the work of a "Watahaki".

"Give birth to me once more. I want to meet you once more. I want to see this beautiful ocean once more..."

Ginko arrives on an island asking about the so called "Rebirths" but to no luck. At night he later meets a peculiar lady who happens to be able to see a strange light in the sea and she ends up inviting him to her home. She later explains to him what "Rebirths" are; when a person is about to die they can be taken deep inside the Ryuugu, where they are reborn.