Construction of an artificial island is disrupted by an unexplained phenomenon known as "burning sea". Masamichi Haru...

Aoi Minamo is hired to be Haru's assistant. When burning sea causes a power outage that threatens life support system...

Haru struggles to become proficient enough at Metal diving to help Kushima's research. During his final test, he expe...

Haru has become an official investigator and is asked to dive into the Metal to rescue the consciousness of an Artifi...

Minamo searches for a pair of antique Sous-Marin sunglasses as a gift to congratulate Haru on becoming an official in...

Because of her lack of a cyberbrain to read online texts, Minamo must find a physical book for a book report. Her dis...

Minamo and Haru discover a dog whose consciousness was swapped with that of his owner. They hurry to find the owner's...

Minamo and Sota investigate reports of ghost sightings at Minamo's school.

Minamo and Sota's father shuts down the core server to minimize damage from a virus intrusion, putting his job on the...

Those who contact a mysterious oracle in the Metal named Eliza end up with lost memories. During the investigation, M...

Minamo tries to help violinist Ichinose, who has been discouraged ever since Kushima suddenly quit playing violin lon...

Minamo meets Amy, a girl who has just received cybernetic eyes to cure her blindness, but learns that Amy is struggli...

Haru reminisces about his youth, from his parents' struggles with poverty that led to trouble with the yakuza, to his...

Minamo goes for a dive in the sea. This episode is a recap of the series so far.

Haru investigates cyberbrain deterioration in a group of food connoisseurs.

Sota tries to train enough to defeat Holon in battle. Meanwhile, Haru investigates a case of a female android being i...

Minamo's family comes to visit.

Haru, Minamo, Sota, and Holon go to a distant jungle island to investigate a mysterious background noise in the Metal...

Holon collapses, and the others attempt to complete their investigation without her help.

At the jungle island, Haru realized that he can learn to walk again, and he begins to practice in secret to avoid jeo...

Following the success of weather particle experimentation, the Secretary-General and Jeni En want to install weather ...

Kushima goes missing, and is later found without his cyberbrain. Brain death will occur within twelve hours, so Sota ...

With help from the Secretary-General, Sota deciphers the clues to bringing Kushima's cyberbrain back online, but inst...

Sota breaks into the weather particle facility with help from Haru in the Metal, but before he can reach the control ...

After the spread of weather particles, drastic weather changes occur across the planet, and the burning sea phenomeno...

Haru makes contact with Eliza and receives Kushima's proof that the weather particles will cause worldwide disaster. ...