Relics

Relics shouldn't be confused with the electric swords found in the Dusk Realm or the fetishes used by Phylia user in Parano.

"Well, you see, here’s what relics are. It’s an overarching name for anything that can’t be made with modern technology, and was clearly made in the past. They’re usually weapons or armor, or handy items. What you have there is of the handy items variety. Hold it up to your ear."

- Shima explaining what are relics to Haruhiro after he gave him a receiver, volume 4

Relics are mysterious, rare, and usually powerful objects which display magic like effects, some even able to go against the laws of the world..

A lot of them are linked to Ainrand Leslie and his Leslie Camp which is said to be the place where the legendary merchant stock his immense treasure and large collection of relics.

Know relics:
Objects that have been confirmed to be relics.

Golems' core
The core used to animate golems is a form of relics that creates a pseudo soul and acts as the golem heart and brain. It's the golem true body and as long as it's not destroyed, it can be reconstructed with the same personality as before.

The one containing Enba looks like a hard gem small enough to fit in Setora's pocket, cover in small holes from in witched flicker numerous blue light. According to necromancers from the Hidden Village, it should be possible to read the pseudo-soul's will from those flickers.

Enba's core is the only relic which has been shown to work in Parano, it's also the only known relic to have been a fetish in that case used by Setora to summon Enba's former body for a time.

Receiver
A black rectangle which functions much like a radio or cell phone allowing long distance communication.

Door to Parano
A door leading to the world of Parano, can be found within the Leslie Camp. When opened it looks like just a normal door place in the center a room, but when someone or something goes through it they can go backward and are forced to completely pass trough and end up in Parano.

Universal Keyring
A keyring of nine (now 8) keys which seems to work as one-time use universal keys which once use turn into black mist, found inside the Leslie Camp

Memory-erasing drug-making relic
An unnamed relic use by Leslie to create the drug used to erase volunteer soldiers' memories.

The Paw of Terror
That relic is actually the hair ornament Hiyomu wears, it was given to her by Leslie but she was the one who chooses the name. When used as a weapon Hiyomu throw it at the enemy, despite being less than fist-sized and looking like a stuffed animal, it can inflict some severe blunt damages on impact (enough to incapacitate Kuzaku wearing armor). Moreover, that relic is able to move on his own coming back to its user after having been thrown and following them around

Beheader
Shinohara's sword.

Unnamed "magic pouch"
A pouch which can store way much than the exterior make it look, a relic given to Hiyomu by Leslie

Portal bud
The real name of that relic is still unknown. It's made up of 2 objects, one of them being a relatively small bud-shaped objects, the form of the other is unknown but it seem to also be quite small, as it can be easily carry by Hiyomu.

When the bottom of the bud-like one is push inward it will start to vibrated before spawning an oblong hole in space liking the 2 parts of the relic, ultimately creating a temporary portal for people and object to instantly go from one place to the other. However, that relic can only be used one time and the portal only stay open for a really short amount of time (when used in Level. 16, it only lasted long enough for 6 persons to go through). It also seems like at least the bud-shaped part vanish when the portal appear.

Jin Mogis' ring
A ring that was probably given to Jin by Leslie, it looks like a ring of moderate size (Haruhiro describes it as not "especially large") made mostly of a gold-like metal. However, what's most noticeable, is the jewel mounted on the ring's head because of its vivid imposing light blue hue and the fact that 3 petals or leaves shaped objects float inside it.

That relic doesn't seem to have any passive effect and need to be activated by saying the following sentence in Latin "Nostarem sangui sacrifici" (ノスタレム・サングウィ・サクリフィシ). Once activated the ring saps the strength of other people and animals near the wearer (for those affect it apparently feels like being in an anemic state), the exact radius of effect is unknown but big enough to encompass a sizable room like the throne room of Tenburo Tower. As other people are weakened, the wearer is strengthened gaining super-human speed and strength, enough for Jin to completely overpower Team Haruhiro by himself.

Leslie's staircase
A spiral staircase found in Leslie's base, it goes through an area of "nothingness", Shinohara describing it as "an open space that was neither bright nor dark. With nothing resembling walls. Just the spiral staircase.". The staircase itself is made of something which is neither iron nor stone.

It's unclear what the purpose or function of that relic is, considering that that staircase leads to what seems to be Leslie's personal "chamber", it could be a security measure.

Renji's Sword
A large sword, when used it produces powerful lightnings however that power comes at a cost and the user is left drained after using it, that fatigue is not to be ignored as it could lead to the user death if overused.

Probable relics:
Objects which likely are relics but haven't been explicitly confirmed as such.

Soma's swords
A long and a short katana, both are described as extraordinary weapons. So much so, that even an amateur can see how out of this world they are from just a look.

The longer one seems to have the ability to extend and can easily cut through the 2 meters thick tentacles of a gigantic hydra of the Dusk Realm.

The shorter katana has never been shown in action but being one of Soma's weapon it's likely to also be a relic.

Soma's armor
An armor that Soma wears, it's black in color, tightly fitting, with no angular spots, and an asymmetrical skirt long enough to cover the lower body.

According to Haruhiro the armor look like it's made of countless little metal plate and some orange light constantly leaks out from the inside.

Lilia's sword
A thin sword, probably a relic as Lilia has no problem using it to deviate and injured the 2 meters thick tentacle of one of the Dusk Realm Hydra.

Kemuri's sword
A very long sword, likely a relic as it's able to withstand a frontal clash with one tentacle of a gigantic Dusk Realm hydra and then tore through it.

Leslie Camp
The whole camps is probably a relic or at least under the effect of one and contains multiple other relics.

Door to Parano
A door leading to the world of Parano, can be found withing the Leslie Camp.

Black Glass Eyes
Glass eyes like objects that Leslie has in place of eyes.

White Bone Staff
A staff use by Leslie, made from unidentified white bone.

Legendary Relics:
Relics appearing in legends, it's unclear if they really exist or really have the effects they're said to have.

Tempest Calling Ring
A ring said to be able to call forth great tempests, Legends say that Leslie once sold it to a rich merchant from Vele in exchange for his wife and daughter.