The world can be healed through music, and these three girls want to make it happen. Meet Kana Fujii, Reimi Itsushiro, and Hibiki Morishima—three healers-in-training at the Karasuma Phoniatric Clinic learning the art of healing patients’ illnesses and injuries by singing. Join them on this musical adventure of kindhearted, powerful miracles sung to heal the world.

Not every party treats you like a hero—especially when you’re a lowly red mage like Yuke. So, after years of constant ridicule by his A-rank party members, he ditches them. Searching for a new party, he reunites with former students Marina, Silk, and Rain, and joins their group. But on a quest to conquer the world’s greatest dungeon, they become entangled in chaos that threatens the world.

Sōya Kuroi has dreams of people with superpowers fighting a massive dragon in the sky, but his real life is almost as weird. He's had amnesia for about two weeks and been taken in by a maid and an anthropomorphic cat. When a UFO in the shape of a stuffed bear approaches Sorimasaka City and other metros around the world, he's startled to see seven rainbow-sparkling heroes zoom out to confront it – just like in his dream. Even weirder, the maid wants him to leave his shelter to confront these heroes and take the source of their power.

I-Machines are the general term for robots that operate in extreme environments. While Alliance Academy student Maya Mikuri is in the middle of operating an I-Machine, she gets involved in an incident with pirates, and ends up serving as a crew member on an excavation company's spaceship.