Ichika is a high school musician who can enter a mysterious place called “SEKAI,” where she and her friends express their innermost emotions through music alongside Hatsune Miku. One day after giving a live performance, Ichika meets a new Miku that she has never seen before. No matter how hard this new Miku tries to sing, she struggles connecting with the hearts of her listeners. Miku must rely on the help of others to find a way to sing again.

Yukito, the son of a questionable cult leader, lost his life due to the cult's ridiculous training practices. Now to his surprise, he was reincarnated into another world! It was an ideal world for him without the concept of "God" or "religion" BUT...! A unique "reincarnating in other world" adventure begins: creating a "religion" in a world without God?!

High school freshman Sakai Yonosuke, aka Eiyu, is obsessed with rom-coms, especially ones about childhood friends. But even though he has two childhood friends of his own—Shio and Akari—he's sadly given up on romance becoming a reality. Little does he know, both girls have the hots for him! A humorous will-they-or-won't-they rom-com about friendship, love, and first crushes!