Sweepers
Sweepers are strange beings known to inhabit the Backstreets of every District in the City, only coming out at a specific time of night to destroy anything left outdoors, "sweeping" detritus away.
They can also be found in the Outskirts.
Overview
Sweepers are humanoid creatures occupying the Backstreets that emerge from their nests every night from 3:14 A.M. until 4:34 A.M. in three waves,[1] during which they participate in the "Night in the Backstreets", a period of time in which no laws are applied to a populace besides taboos from the Head and the Wing in which the said populace lives. During this time period, the Sweepers destroy anything left outside, whether it be objects or people. They absorb organic matter, human flesh in particular, and convert it to the red fluid that compses their "body", while simultaneously destroying inorganic litter. This also includes vehicles, with the exception of those recognized as residential vehicles by the City.[2] Sweepers are considered a regular and predictable component of the City, with some citizens accustomed enough to make use of their sweeping as a rudimentary disposal service, most often for crimes.[3] Sweepers also exist in the Outskirts, and are considered a particularly high threat to children wherever they roam. Sweepers may prey on, accompany, abduct, or treat children like their toys.[4][5]
Due to their immense population, fighting against the Sweepers is viewed as a pointless endeavor. It is also because of these sheer numbers and organizational force that Sweepers are considered as much of a threat as they are.[6] Even if a Sweeper dies, the crowd will continue to march on and sweep up what lies ahead of them, including the fresh corpse of their fellow Sweeper.[1] Fortunately, the three waves of Sweepers each approach at predictable times, and someone can confidently consider themselves safe after surviving all three.[1] This march is described as an eighty minute sweep from one edge of a Nest to another, without rest.[7] However, the existence of a Syndicate, Association, or Office on a particular street is said to make it more difficult for Sweepers to raid.[8]
The Sweepers' presence in the City is permitted by the Head itself, which may personally request their disposal service at times.[9] Sweepers are not actually mandated to perform exclusively at night by any kind of biological force, rather, that just happens to be their "role" in City life and a rule that they follow. Sweepers are actually capable of a variety of complicated maneuvers, including communication, intelligence, and arriving on a scene at any time of day (such as one group's decision to attend the Library in search of books).
Sweepers are created by their "Mother" using what they consider "food".[10] The transformation of a human being into a Sweeper involves melting into the red fluid which is considered the creatures' "body", a specially patented substance with approval of the Head.[11] This liquid is consumed by the Sweepers in order to move, sweep, and eat.[11] Thus, in order to function, Sweepers are required to refuel periodically by consuming people and melting them into more liquid.[11]
Sweepers live in dens, which may be inhabited by one family of Sweepers each.[12] While the form of these dens is unclear, they are described as having lockable doors.
Culture
Bands of Sweepers are divided into "families", and address each other with familial or cordial terms such as brother, uncle, and neighbor. These families do not reflect literal blood relations, but are instead a collection of metaphorical labels, similar to Bloodfiend hierarchies.[12] "Mother" is a term exclusive to an individual, the one who responsible for turning people into Sweepers. She appears to be the leader of their kind, with even the power to wage war.[12] Despite not being literal family, the Sweepers appear to harbor genuine concern and affection for one another, seeking to keep each other safe.
Sweepers have a set of rules they abide by, one of which keeps their sweeping exclusively to the Night in the Backstreets.[9]
Enemy
Fighting Style
Sweepers never fight alone, with hordes of them always present at any given time, making them highly overwhelming foes. This was true in Library of Ruina, and further shown in Intervallo V: Nocturnal Sweeping.
Sweepers primarily make use of 
Pierce attacks with 
Wrath or 
Pride Sin Affinities, which inflict 
Bleed BleedThe next Y time(s) this unit tosses an attack skill Coin, take X fixed damage. onto their targets. All their attacks heals HP On Hit, and their survivability is further bolstered by Skills and Passives that provide Damage Reduction and passive healing on any unit's death. Their kits feature en-masse SP healing with the passive "For the Family" that provides SP for each living sweeper, and "Night in the Backstreets" which provides 30 SP on entry at Wave 2 and beyond. Many of their attacks feature 
Unbreakable Coin Unbreakable Coin- This Coin does not break upon Clash Lose.
- If an Attack Skill has this Coin, attack with this Coin after getting hit.
- Upon Clash Lose, fix the Coin Power of the unbroken Coin to 1s, meaning that taking damage is guaranteed when facing off against the Waves.
They are also capable of "reviving" through 
Persistence PersistenceMax Stack: 4
When taking lethal damage, 80% chance to not take that damage, heal 60 HP, recover from Stagger, and lose this effect
The above effects do not activate under the following conditions:
- When the Coin damage taken exceeds this unit's max HP
- When this unit has the HP Healing Down effect
Reduced by 1 at Turn End, a status carried over from Library of Ruina, allowing them to nullify damage, recover from Stagger and regenerate 60 HP upon taking what would be fatal damage at an 80% chance. However, this effect can be bypassed when the Sweeper is inflicted with 
HP Healing Down HP Healing DownHeal -(X*10)% HP from Passives, Skills, and Coin effects this turn. (Max 5) or if the damage surpasses their maximum HP. If the Persistence PersistenceMax Stack: 4
When taking lethal damage, 80% chance to not take that damage, heal 60 HP, recover from Stagger, and lose this effect
The above effects do not activate under the following conditions:
- When the Coin damage taken exceeds this unit's max HP
- When this unit has the HP Healing Down effect
Reduced by 1 at Turn End effect activates, they will continue using Skills afterward, including Cracked Unbreakable Coin Unbreakable Coin- This Coin does not break upon Clash Lose.
- If an Attack Skill has this Coin, attack with this Coin after getting hit.
- Upon Clash Lose, fix the Coin Power of the unbroken Coin to 1s.
Types of Sweepers
| The City's Sweepers | |||
|---|---|---|---|
Gallery
The City's Sweeper B
The City's Sweeper
The City's Sweeper A (Unused sprite)
The City's Sweeper B Story Log Portrait
The City's Sweeper Story Log Portrait
Trivia
- Sweepers seen in additional Project Moon media include:
- While the Sweepers are implied to be made entirely out of liquid, a piece of artwork in Library of Ruina features a deceased Sweeper with a visible spinal cord.
- The Sweepers made their first appearance in Lobotomy Corporation, appearing as the Ordeal of Indigo Noon.
- Although this was the first appearance of Sweepers in the Project Moon universe, they were not actual Sweepers "breaking in" to the facility, but another piece of Lobotomy Corporation's scenario. Angela describes the ones she encounters during her time at the Library as those of "real life" compared to the Indigo Noon.
External Links
- Indigo Noon - Lobotomy Corporation wiki
- Sweepers - Library Of Ruina wiki
References
- ↑ 1.0 1.1 1.2 The Distortion Detective Chapter 34, The Night in the Backstreets
- ↑ Risk Levels & Classifications Mini Episode - Faust: "This bus is one of the few vehicles recognized by the city as a residential vehicle, which means that we remain safe from the hands of Sweepers."
- ↑ A Sweeper's Page
- ↑ Lobotomy Corporation Tiphereth, Episode 5 - Ayin: "The Sweepers usually preyed upon the children, but sometimes they would “accompany” them. Both were worst case scenarios for the children."
- ↑ Library of Ruina Gebura, Episode III - Gebura: "Most kids her age were either abducted by the Sweepers or treated like their toys."
- ↑ Library of Ruina The Stray Dogs pre-Reception - Roland: "Sort of. One Sweeper is tough as is, but what’s really scary is their organizational power. They crawl outta the woodwork every night and clean the Backstreets. We can’t even guess how many of them are there. No matter how many we take down, more would show up the next night."
- ↑ Library of Ruina Valerie's Page
- ↑ Library of Ruina Mang-chi's Page
- ↑ 9.0 9.1 Library of Ruina Lyla's Page
- ↑ Library of Ruina Sweepers pre-Reception - Anton: "Less food… means Mother… will have… difficulty… fostering… new family members…"
- ↑ 11.0 11.1 11.2 Library of Ruina Anton's Page
- ↑ 12.0 12.1 12.2 Library of Ruina Sweepers pre-Reception
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