Seven Seas revealed the cover for Vol. 1 of the danmei series Three Hundred Years of Longing, written by author Mu Su Li. The cover art and interior illustrations are provided by artist 红鹤鸣冬.
The series’ complete official title is Three Hundred Years of Longing: Bu Jian Shang Xian San Bai Nian. Seven Seas originally announced this series under the name The Unseen Immortal of Three Hundred Years, which is one of many ways fan translators have adapted the original Chinese title. However, Seven Seas later changed the title to Three Hundred Years of Longing without any official statement. It is unknown if this was a direct response to fan feedback, but fans on Twitter/X had pointed out during its initial announcement that the original English title was somewhat unwieldy.
Seven Seas provides the following volume summary:
AN ARCHFIEND AWAKENS
Floating above the Boundless Sea is Tealspire—a towering, thirty-three-story prison built to contain fiends, where the damned are forgotten and demons waste away. At its summit, Wu Xingxue awakens with blood on his hands, chains at his feet, and no memory of how he arrived. The life he once led as a nobleman of Magpie Haven is gone, replaced by confinement and confusion.
Disoriented and stripped of everything, Wu Xingxue is no longer a pampered aristocrat—he’s an archfiend. But fate has other plans. His awakening stirs the legendary Tianxiu Immortal, Xiao Fuxuan: a cold, enigmatic figure with the word mian etched into his neck, wielding a power steeped in divine judgment.
As Tealspire begins to collapse around them, the two must forge a reluctant alliance to survive its fall—and face whatever awaits below. Yet the mysteries only deepen. Why did Tealspire fall? What became of Wu Xingxue’s former life? And who, truly, is the Tianxiu Immortal?
Three Hundred Years of Longing: Bu Jian Shang Xian San Bai Nian Vol. 1‘s release is slated for November 18, 2025. Preorders are now live with select retailers:
U.S.:
Canada:
International:
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Three Hundred Years of Longing: Bu Jian Shang Xian San Bai Nian (不见上仙三百年) is a danmei novel series written by Mu Su Li. It was originally serialized on JJWXC starting in 2021, where it ran for 128 chapters (plus 8 Extras). An audio drama is available, as well as a manhua adaptation which has since been removed from Kuaikan. The series is set in the same universe as Copper Coins and Panguan.
Seven Seas provides the following series summary:
The Banquet of the Winding Wine ends with one nobleman falling asleep warm in his bed. When he wakes, he’s shackled as a prisoner in the Northern Domain of Tealspire, feared by all as an archfiend! However, he’s not the only one who’s just woken up.
Floating above the Boundless Sea is Tealspire—a towering, thirty-three-story prison built to contain fiends, where the damned are forgotten and demons waste away. At its summit, Wu Xingxue awakens with blood on his hands, chains at his feet, and no memory of how he arrived. The life he once led as a nobleman of Magpie Haven is gone, replaced by confinement and confusion.
Disoriented and stripped of everything, Wu Xingxue is no longer a pampered aristocrat—he’s an archfiend. But fate has other plans. His awakening stirs the legendary Tianxiu Immortal, Xiao Fuxuan: a cold, enigmatic figure with the word mian etched into his neck, wielding a power steeped in divine judgment.
As Tealspire begins to collapse around them, the two must forge a reluctant alliance to survive its fall—and face whatever awaits below. Yet the mysteries only deepen. Why did Tealspire fall? What became of Wu Xingxue’s former life? And who, truly, is the Tianxiu Immortal?
Interwoven with Mu Su Li’s signature humor, this genre-defying tale dives deep into the nature of good versus evil—and will make you believe in a love that can last forever!
Mu Su Li has written many other popular danmei works, including Copper Coins, Panguan, Global Examination, and A Certain Someone. Copper Coins will be released in English by Seven Seas in September 2025, while no English license has yet been announced for Panguan despite being part of the shared universe. Global Examination and A Certain Someone are pending English release dates from publishers Rosmei and Hai Tang Books respectively.
Source: Seven Seas Bluesky
