Based on COLOPL's school action role-playing game. Set in the year 2045. The world has been contaminated by Irousu (mysterious invaders who suddenly appeared), and humans find themselves restricted and contained. Standing boldly against these invaders are ordinary girls everywhere, without a powerful army or even weapons. The Shinjugamine Girls Academy is a school for these "Hoshimori" (Star Guardians) destined to fight the Irousu. The player is assigned to this academy to train the girls and take back the contaminated Earth. And so, once again, the chimes echo through the sun-strewn schoolyard to mark the beginning of classes today...

On the far side of the Milky Way, there is a planet gestating magical power-Wilhallen. There are four very different countries on this magical continent: the ancient and mysterious eastern empire—Huang; the free and open Nanyang island country—Tapaz; the iron-clad western republic—Vrsaris; and, Civilized and elegant Beilian Gang-Agnesa. All countries enshrine the High God and obtain the gift of divine power. Although there are occasional conflicts, most people enjoy a peaceful life. Until the era of 3836, when a mysterious man in black suddenly came with an unknown dark force, but found himself in the wrong place at the wrong time. Fortunately, the established fate was as recorded in the time document in his hand. Verhallen opened a new parallel world... (Source: bilibili, translated)

Verta must find a way to escape from the Shura City, in order to rescue her sister Blanca from the monk named Fahai.

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 does not 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. Will they discover their true "colors"?