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"?

At the beginning of chaos, the world was divided into three realms: the realm of deities, the realm of men, and the realm of demons. The realm of deities sent a spirit seed down into the world to help the common people. But the spirit seed continuously absorbed the evil of the world and cruelly harmed living things. In the end, Sen Luo, the king of the deities, sacrificed himself and sealed it. However, because of it, the Shangqing Xianmen, where the realm of deities is located, gradually waned and was lost in history. A thousand years later, the ruins of Shangqing Xianmen started to appear in succession. All major sects fought their hardest for possession of the treasures in the ruins.

"The word 'no' doesn't exist in a concierge's dictionary." That's just one of the demanding rules that Akino must abide by in her new job as a saleswoman at the elegant and expansive Hokkyoku Department Store. It's a very special store — the customers are all animals, and the most valued among them are of extinct species. Sea minks, laughing owls, Japanese wolves, even an enormous mammoth — that's Mr. Woolly, the celebrated sculptor whose works are showcased at the store. It's still a luxury retail space, though, and anxious Akino finds her hands full with the customers' challenging requests. These range from hard-to-find merchandise to more complicated matters of the heart. Can the inexperienced Akino fulfill their whims and meet their expectations? If she wants to keep her job, she'll have to succeed while under constant observation by the fussy floor manager Mr. Todo, a creepy consultant eager to downsize the staff, and the store's enigmatic president (who is not a penguin, by the way!).

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