A Clockwork Ley-Line:
The Borderline of Dusk

In a mysterious school where day and night are two separate worlds, a mismatched trio works to resolve magic-related incidents.

Our protagonist is a newly enrolled first-year student at a boarding school with a notably large clock tower, located deep in the mountains. Unfortunately, on his first day of school, he gets caught up in some sudden trouble, and accidentally breaks an expensive-looking statue.

In order to compensate for the broken statue, the principal orders him and the boy who caused the incident to work for the school’s “Bureau for the Investigation of Special Affairs.”

When they arrive at the Bureau’s headquarters, a room situated in the school’s enormous underground library, a girl is waiting for them there with an apathetic look on her face.

The girl informs the confused pair of the situation: Magic exists in this school.

When the clock tower chimes, the “Realm of Night” appears, and merges with the school building. The Bureau’s job is to take care of the supernatural problems that arise. And so, our protagonist struggles to protect the school from troublesome magical items known as “Mists”…


MichiruKoga Michiru
The protagonist who received a letter from a boarding school and enrolled
Height 185 cm

“She has no intention at all of getting along with us, does she…”
The protagonist. He enrolled at Libra Lapis Lazuli Private Academy as a first-year student after receiving a mysterious prospectus in the mail. On his first day of school, he gets caught up in a certain incident and accidentally breaks a bronze statue in the courtyard. The principal decides to assign him to the Bureau for the Investigation of Special Affairs as compensation. He has an aggressive personality and a somewhat rude tone of voice, but on the inside he’s a very caring person, which leads to him getting caught up in all sorts of trouble. He also has a pretty sharp mind, but he gets frustrated when he can’t keep up with Ushio’s quick reasoning. Ushio is like a rival to him, and he often picks fights with her. He dislikes being called “Michiru,” possibly because he doesn’t like his name.

The World of Ley-line

The Bureau for the Investigation of Special Affairs

The team that the protagonist is assigned to. They handle requests and consultations for the principal and other students. All students know of the Bureau’s existence. The school instructs both day and night students to consult with the Bureau if something doesn’t seem right, or is troubling them. The Bureau members are the only students who the Disciplinary Committee will allow to remain on campus after classes are over. All Disciplinary Committee members are instructed to memorize the Bureau members’ names and faces, so that they will not mistakenly send them away. The Bureau has existed since the founding of the school, but was inactive for a very long time. Shishigatani Ushio revived it by herself. Their headquarters are a room located in the large underground library. Even farther underground is the treasury, where Mists are kept sealed.


Most of the characters in the story are normal human beings. All mysterious happenings are caused by magical items called “Mists.” Mists only work if the appropriate conditions are met, which also means that even an ordinary person can use a Mist if they know its characteristics. However, there are a select few humans who possess powerful magical potential. They are referred to as Magie.

Mists (Magical Tools)

The school’s founder, Kral Lazurit, collected various magical items from around the world, which are still kept sealed in the treasury underneath the library. Since they are sealed within the school, they are all stamped with the founder’s seal, and by means of sealing magic it is impossible to take them outside of the school’s grounds. These magical tools that are kept under the school’s control are called “Mists.” Each Mist has its own abilities and usage requirements. Also, using a Mist expends the user’s latent mana. If the user does not have enough mana, something else will be taken as compensation.

Mists tend to appear in front of those who are in need of their power. They can also draw people towards them. If a person uses a Mist without knowing its costs or characteristics, it can cause serious trouble. When the school was founded, the founder catalogued all of the Mists and the specifics of their abilities. These records are kept in the underground library.

The School

Libra Lapis Lazuli Private Academy is an imposing boarding school with a tall clock tower. It occupies a large amount of land. Many mysterious items were brought there, such as archaeological artifacts, ancient documents, and other antiques. Among these were magical tools that possess actual supernatural powers, called “Mists.” Furthermore, the school itself is a giant magical apparatus. When night falls, the school building is linked to an alternate dimension called the “Realm of Night,” where a different set of students attends their classes. The school’s founder, Kral Lazurit, was himself a Magie with special powers, and created this school to bring together other Magie, where they would be protected and their ancient powers sealed. Presently, few people know the school’s true nature, and it operates as a regular academy.

Compared to other schools, class time is shorter and ends earlier. However, the dorm’s curfew is very strict, and measures are taken to ensure that students are back in their rooms by the designated time. Once a student has returned to their dorm, they are not permitted to go out, though they are free to walk around inside. The reason for the strict curfew is for the safety of the students, and to keep the Realm of Night a secret. Since the students cannot leave their dorms, the dorm buildings have various facilities, and club activities also take place there. Students are split between the east and west dorms, but all Bureau members live in the east dorm.

Realm of Night

When the clock tower chimes, another world appears inside the school building. It’s not much different from the real world, but it is only ever nighttime there, and it is impossible to leave the campus during this time. The students of the Realm of Night seem just like regular students, but they only know of nighttime and are unaware of the existence of the daytime world. The regular students are also unaware of the existence of the “Realm of Night”; only a select few people are able to visit both sides.

The Disciplinary Committee

The Disciplinary Committee’s role is to ensure that all students leave the school building and return to their dorms before the clock tower chimes. They are allowed to be a bit rough with the students if it is necessary in order to fulfill their duty. Due to the nature of their role, all members are taught the existence of the Realm of Night, and they are aware that their job is special. In order to become a member, you must have the school’s approval and undergo an examination. The school selects those with high latent mana or the potential to gain more mana in the future as Disciplinary Committee members.

A Clockwork Ley-Line: The Borderline of Dusk

releasing in 2017

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