After graduating from one of the world's top music conservatories, Yun Tang was on the verge of holding his first solo recital when he was unexpectedly transported to another world during a cruise.
This world had more advanced technology, but it was far from safe. The military was divided into factions, foreign enemies threatened from beyond its borders, and, worst of all, it was a wasteland of music.
To survive, Yun Tang had no choice but to work at a cafe. Faced with such a drastic fall in his circumstances, he consoled himself that making latte art was no different from playing the violin.
But a peaceful life was hard to come by. The imbalance between sentinels and guides left guides oppressed and exploited.
After his identity as a guide was exposed, Yun Tang and his friends enrolled in the Guide Academy. His classmates hoped to match with outstanding sentinels, while his friend was determined to save every guide. Yun Tang only wanted to hold a solo recital.
He thought it would be nothing more than a pipe dream in a world without so much as a musical instrument. He never imagined that one day so many people would beg him to hold a recital, or that even his friend, who had always tried to save the world by force, would come to him for music lessons.
Only...
He really can't do anything for people who are tone-deaf!!!
Theme: As long as there's music, the world will never end.