Our take
The setup
Someone sets a library ablaze, burning away a clue to a sought-after relic. The heroine, who carries the weight of her nation, rages less over the lost clue than over the destruction of people's recorded history.
Why read it
For fans of
This volume opens on destruction: a library set ablaze by an unknown hand, taking with it a clue tied to a sought-after relic. The loss is immediate and tangible, a fire that erases not just information but a piece of shared memory.
What stands out is how the heroine responds. Rather than focusing solely on the vanished clue, she is consumed by grief and anger over the destruction of documents that recorded the history of ordinary people. As someone who carries the burden of representing her nation, her fury takes on a public, almost formal weight — she is not merely upset, she radiates the authority of someone speaking for more than herself.
That reaction does not go unnoticed. Watching her grief and anger unfold, another person is moved enough to reveal what they know about the relic's clue, suggesting that sincerity and conviction can open doors that force cannot. But the moment this knowledge comes to light, a third figure moves to block the way forward, turning what could have been a straightforward revelation into a new point of conflict.
Readers drawn to stories where emotion carries narrative consequence will find something satisfying here. The series does not treat anger as simple spectacle; it ties the heroine's outrage directly to themes of memory, loss, and responsibility, then lets that outrage ripple outward to affect how other characters choose to act. The interplay between grief, trust, and obstruction gives the sequence a layered quality rather than a simple action beat.
Overall, this entry offers a compact but resonant arc: a devastating loss, a display of conviction, an unexpected act of trust, and an abrupt complication. For those already following the story, it promises another step in a long-running tension between those seeking answers and those determined to keep them hidden.
21 volumes in print / Volume 1 to the latest
Spoilers through Vol.21
Official synopsis
Someone set fire to the library, and the clues to the Jade Seal have been burned away. Sakura is more distressed and enraged by the loss of the documents recording the history of the people than by the disappearance of the clues. She radiates the majesty of one who carries the burden of a nation. Hearing Sakura's thoughts, Mina reveals clues to the Jade Seal, but Rinsetsu blocks their path.
Official synopsis
Rinsetsu, the head lady-in-waiting to Princess Ginren, is actually Giselle Müller of the Koenig Empire!! Knowing the true identity of Rinsetsu, who might know the whereabouts of her older sister Kasha, what will Sakura do...!?
Official synopsis
The great nation of Karyo is plunged into confusion by the sudden death of the emperor. Who will become the next emperor to seize its vast riches...? Various motives collide! While caught up in this turmoil, Sakura is searching for the whereabouts of the Imperial Seal, which is indispensable for the succession to the throne, when suddenly an 'avenging spirit' appears before her eyes...!?
Official synopsis
Kai challenges the labyrinth on the isolated island with the mermaid descendant girl, Sierra. But there, the fleet of the Darl Republic's Governor, Bled Regan, appears. Gaining the power of Sierra's Nectar, Kai's new power awakens!!
Official synopsis
The island of Nereia, where a labyrinth remains. There is a legend that the people who live there, the Nereides, are descendants of mermaids. Together with the Nereides girl, Sierra, Kai aims for the depths of the labyrinth...!?
Official synopsis
The new mission given to Kai is to go to the dwarf kingdom of Galandua and obtain its divine queen, Dornea! However, Dornea comes on to him instead, and Kai ends up incurring the wrath of the dwarf king...!?
Official synopsis
Princess Sakura is held captive in the fortress of the Darl Republic! To save her, Kai puts on a mask and leads the army, posing as the deceased Gray. Gain the power of Nectar and stand against the massive enemy!!
Official synopsis
Princess Sakura, the survivor of the Adarl Kingdom, summons an ordinary young man named Kai Watari from another world! However, he transforms into a formidable warrior by drinking Nectar...!!