Silent Sky is a combination of the additional episodes 13 and 14. It consists of the story in the future, three months after the incident that was similar to New Generation Madness and the disease Chaos Child Syndrome that brought by the past earthquake in Shibuya.

The cultural festival is one of the most important events on the academic calendar. Just like all other clubs, Mizusawa's Karuta Club is preparing to participate as well. Due to previous circumstances, Team Captain Chihaya Ayase is temporarily absent during the team planning. First year student Sumire Hanano is intent on taking advantage of this occasion to fulfill her dream and finally make her teammate, Taichi Mashima, fall in love with her. A play based on Genji Monogatari might be just the thing she needs to enact her plan.

Kaniini to Kaniino (Kanini & Kanino) Under the faint sound of fluttering fairy wings, a forest stream is the home to tiny anthropomorphized freshwater crabs. Siblings Kanini and Kanino live peacefully with their father while their mother is above the surface to give birth. However, during a fierce storm, their father is lost downstream, so the siblings set out to find him on their own. But the waters are not free of danger, and a flesh-hungry piranha could be hiding behind any stone. Samurai Egg (Life Ain't Gonna Lose) In a carefully monitored hospital room, one boy writhes in pain at the mere taste of eggs. His name is Shun, and he has had a severe egg allergy his whole life. As a child, Shun is careless and his condition is frustrating—as it is to his mother, who is constantly battling his egg intolerance and near death experiences. But, through perseverance, Shun learns to live despite the amount of eggs in the world around him. Toumei Ningen (Invisible) An invisible man starts his monotonous day as usual—by putting on clothes and the weight of a fire extinguisher on his shoulders to keep his airy body grounded. Although he interacts with the tangible world, no one actually seems to acknowledge his presence. That is, until he meets a kind-hearted blind individual in a heavy storm, one that may show him the purpose of his isolated life.

A collaboration ad campaign between Yowamushi Pedal and Chiba prefecture about bicycle safety.