Seasons & Episodes
Underwater Island Drive
Construction of an artificial island is disrupted by an unexplained phenomenon known as "burning sea". Masamichi Haru is
Girl
Aoi Minamo is hired to be Haru's assistant. When burning sea causes a power outage that threatens life support systems o
Re-dive
Haru struggles to become proficient enough at Metal diving to help Kushima's research. During his final test, he experie
Atoll of Desire
Haru has become an official investigator and is asked to dive into the Metal to rescue the consciousness of an Artificia
Sous Marin
Minamo searches for a pair of antique Sous-Marin sunglasses as a gift to congratulate Haru on becoming an official inves
Love Letter
Because of her lack of a cyberbrain to read online texts, Minamo must find a physical book for a book report. Her discov
Hand in Hand
Minamo and Haru discover a dog whose consciousness was swapped with that of his owner. They hurry to find the owner's bo
No Friend
Minamo and Sota investigate reports of ghost sightings at Minamo's school.
Employment
Minamo and Sota's father shuts down the core server to minimize damage from a virus intrusion, putting his job on the li
Supremacy Negotiations
Those who contact a mysterious oracle in the Metal named Eliza end up with lost memories. During the investigation, Mina
Just Intonation
Minamo tries to help violinist Ichinose, who has been discouraged ever since Kushima suddenly quit playing violin long a
Morning Without Light
Minamo meets Amy, a girl who has just received cybernetic eyes to cure her blindness, but learns that Amy is struggling
Another Sea
Haru reminisces about his youth, from his parents' struggles with poverty that led to trouble with the yakuza, to his me
Wave and Wind
Minamo goes for a dive in the sea. This episode is a recap of the series so far.
Last Dinner
Haru investigates cyberbrain deterioration in a group of food connoisseurs.
Clear Power
Sota tries to train enough to defeat Holon in battle. Meanwhile, Haru investigates a case of a female android being ille
Home Sweet Home
Minamo's family comes to visit.
Green Rebellion
Haru, Minamo, Sota, and Holon go to a distant jungle island to investigate a mysterious background noise in the Metal. A
Returning Water Drops
Holon collapses, and the others attempt to complete their investigation without her help.
With These Feet
At the jungle island, Haru realized that he can learn to walk again, and he begins to practice in secret to avoid jeopar
Eternity
Following the success of weather particle experimentation, the Secretary-General and Jeni En want to install weather par
Peaceful Death
Kushima goes missing, and is later found without his cyberbrain. Brain death will occur within twelve hours, so Sota and
Human Commandments
With help from the Secretary-General, Sota deciphers the clues to bringing Kushima's cyberbrain back online, but instead
Earth Commandments
Sota breaks into the weather particle facility with help from Haru in the Metal, but before he can reach the control roo
Last Dive
After the spread of weather particles, drastic weather changes occur across the planet, and the burning sea phenomenon r
Real Drive
Haru makes contact with Eliza and receives Kushima's proof that the weather particles will cause worldwide disaster. Har