The protagonist, Yun Chen, also known as Fujiwara Yun
It tells the story of the Immortal Cultivator Yun Fujiwara who accidentally entered the world of Conan (and was kicked down by his master) by eating a yellow plum in order to achieve spiritual cultivation. He used a wagashi (a confectionery) shop as a base to find a unique path of "keeping one's heart" between the immortal and mortal worlds. He kneads dough with spiritual power and heals people's hearts with desserts. He not only helps Conan solve strange cases containing spiritual elements, but also builds a family with Suzuki Sonoko and raises his son Fujiwara Kokoro, who inherits the immortal blood.
From fighting against the remnants of the black organization to resolving the time and space turbulence caused by the Time Spirit Dragon, he has always integrated his "ordinary heart" with "immortal magic". In the end, Shuangshintang became a link between the two worlds. The sweetness of wagashi (a kind of snack) hides his ultimate understanding of "the Tao in daily life" - true practice is to keep the original intention in the smoke and fire, and let the warmth be passed down from generation to generation.
