Kiniro no Corda: Primo Passo - Hitonatsu no Encore (2007)

Totsuko is a high school student with the ability to see the 'colors' of others. Colors of bliss, excitement, and serenity, plus a color she treasures as her favorite. Kimi, a classmate at her school, gives off the most beautiful color of all. Although she doesn't play an instrument, Totsuko forms a band with Kimi and Rui, a quiet music enthusiast they meet at a used bookstore in a far corner of town. As they practice at an old church on a remote island, music brings them together, forming friendships and stirring affections.

It is 300 years into the future. Earth's environment had been devastated by mankind's own foolish plans and humankind is beleaguered by the sentient forests which they have awoken. The world balance is tipped when a young boy named Agito stumbles across a machine that glowed in a strange blue hue inside a forbidden sanctuary.

Two recap specials that focus on Team Urameshi's matches in the Dark Tournament and four separate volumes focusing around one of the main characters; Yusuke, Kurama, Hiei, or Kuwabara.

Nishi is a loser who has a crush on his childhood girlfriend. After an encounter with the Japanese mafia, he journeys to heaven and back, and ends up trapped in an even more unlikely place.

A giant whale appears and flies above Sakura New Town. With the whale’s sound of crying, some changes occur to Kenta Amano and Yokai.

Everyone's favorite TV superhero Action Mask shows up in Kasukabe, and he's trying to get something from Shin-chan -- but what could it be?

Middle school freshmen Haruka and Makoto join the school swim team, and have to join forces with their new teammates to win.

In the distant technological future, civilization has reached its ultimate Net-based form. An "infection" in the past caused the automated systems to spiral out of order, resulting in a multi-leveled city structure that replicates itself infinitely in all directions. Now humanity has lost access to the city's controls, and is hunted down and purged by the defense system known as the Safeguard. In a tiny corner of the city, a little enclave known as the Electro-Fishers is facing eventual extinction, trapped between the threat of the Safeguard and dwindling food supplies. A girl named Zuru goes on a journey to find food for her village, only to inadvertently cause doom when an observation tower senses her and summons a Safeguard pack to eliminate the threat. With her companions dead and all escape routes blocked, the only thing that can save her now is the sudden arrival of Killy the Wanderer, on his quest for the Net Terminal Genes, the key to restoring order to the world.

Kyoko, who couldn't believe anything in the world and lived a desolate life, meets Katsuya Honda, who has been assigned as an educational trainee. She is at the mercy of Katsuya, who is rude and has a strong habit, and she is gradually attracted to her. However, she is disowned by her parents in the wake of an incident with her bad fellow. It's a punishment that I've been doing as much as I like. Katsuya appears in front of Kyoko who thinks so...

Summary of the first season of the show, as seen from Rikka's perspective with new elements.