Items

Items are a variety of all the relevant and named items appearing in the Hachinan tte, Sore wa Nai Deshou! series.

Magic Sword Hilt
A sword hilt that lacks a blade. Instead, the blade is automatically formed with the corresponding magic attribute that is poured into it.

This item appears to be an instance of a trope known as Chekhov's Gun, since it is mentioned early on in Wend's exploration of the contents of the magic bag gifted to him by his master, and then promptly forgotten about until Wend's showdown with the spirit of his master. (Chekhov's Gun is a storytelling rule by late-19th-century playwright Anton Chekhov, exemplified by his statement that "One must never place a loaded rifle on the stage if it isn't going to go off. It's wrong to make promises you don't mean to keep.")

Magic Bag
A bag that can hold an immense amount of items, with the limit depending on the user's magic capacity. Simple multi-purpose magic bags can be powered with a small magic gem to make them usable by commoners without magic talent also, but the method of making such an item proves so difficult that only the Magic Tools guild does so.

Items stored in a magic bag do not age, allowing food to stay fresh, and for items to retain the temperature from when they were placed inside. Placing living things into a magic bag is not possible, however this seems to be a restriction of higher-order life, as things like the mold used to produce Wend's miso are not affected.

Magic Katana
A special sword produced exclusively by the Mizuho people, in the Holy Empire Urquhart. Despite being called a katana, its appearance is that of a more conventional sword, with the blade edge on both sides. It is ornate in design, with intricate patterns, and containing a removable magic gem that allows the wielder to recharge their mana or use it in specialized magic attacks only possible by using this sword. It is produced by combining layers of soft and hard secret steel.

Magic Core/Stone
Magic cores are harvested from monsters. They are the source of the magic energy that enables the monster to act, and often to use magic. The size of the core roughly correlates to the size of the creature, but it is more accurate to say that the size of the core reflects the magic power of the creature, and bigger monsters are more likely to have more magic power. Once a core has been removed from a monster, it is typically simply referred to as a magic stone.

Magic stones occur naturally when a monster comes into being, but can also be artificially created. The Ancient Magic Civilization used just such a method, automated, to supply cores for the iron golems defending the underground ruins as well as the stone golems defending the mithril mines of the Herathania Valley. These cores alone are not enough for golems to operate, and in their case a larger golem (such as the mithril dragon in the underground ruins) with an artificial personality crystal acts as the control method for all the other golems.

Magic Gem/Crystal
Magic cores that have been processed to allow them to be used by humans as a mana source. These are typically used to supply power to magic tools, ranging from magic bags and simple tools that even non-magical commoners can use, up to the large gems that power the flying ships. Additionally, the gems can be used as a battery to store extra mana that a magician can draw from.

Wend uses such gems liberally as an adventurer, as his attacks are so powerful that even his exceedingly large mana capacity cannot always keep pace. The stone in the engagement ring Wend buys for Elise is also such a gem, and she views its ability to recharge her healing magic as a symbol of how much he cares that she survives and is able to use her powers to help him and others whenever possible.

"Secret" Steel
Secret Steel is a general term used for special alloys of traditional steel with some amount of mithril, orichalcum, or both. The exact ratios that work to make secret steels are closely-guarded secrets of the swordsmiths who use them, with the main recipes often lost to time.

There are two main forms of secret steel discussed in the series; soft and hard. Soft is produced by mixing the steel with a large amount of orichalcum, but processing the blending in a specific way that allows them to properly bond. Hard is produced by mixing the steel in a specific ratio with both mithril and orichalcum. More than one ratio for hard secret steel exists, with the Mizuho swordsmiths closely guarding one, and Wendelin discovering another through experimentation so that he can construct a magic cannon.

Mithril
Mithril is a metal with properties that allow it to have near total resistance to magic. Though the exact details of the metal is unknown, it is believed that it may be the product of infusing silver with massive amounts of mana until its very nature becomes modified.

Orichalcum
Orichalcum is a rare and exceptionally-valuable metal capable of channeling large quantities of magic, which is therefore highly useful in the production of magic tools, especially magic weapons.

The Helmut Kingdom
The kingdom uses a variation of a precious-metal based coinage system. The coins repeat on a simple 10x valuation. On occasion, the Novel will refer to large amounts in "Cents," with 1 cent being the same as 1 copper coin. For example, saying something was 100,000 cents is equivalent to the value of a single gold plate.

The Helmut Kingdom does not appear to use any official denominations below the value of approximately 100¥.

Although Gold Plate and Platinum Coin/Plate currency exists, it is rarely used, except for high-end transfers between nobles and/or the King.
 * In the LN, it is explicitly pointed out that if you use anything above a gold coin in standard commerce, you are unlikely to be able to get change for it.

Bartering
In the frontier regions, as well as between adventurers, it is common for individuals to exchange goods directly via a barter system, directly trading one good for another, rather than using explicit coinage.
 * An example of this is when, in the LN, Wend repeatedly exchanges hunted game (mostly rabbits) with farmers in the Baumeister Knighthood in exchange for soybeans, so that he can experiment with creating miso (and soy sauce). In the anime, creating miso doesn't occur until much later, after he has entered the academy and inherited the estate of his former master.

Discrepancies
Both the Anime and the LN contain several errors when translating between Japanese yen (¥) and Helmut Kingdom currency, though the majority of the time both follow the table above.

At several points, the anime and LN diverge in the descriptions of currency used, as well as the amounts.
 * For example, the gift to the church for the "real baptism" was a few hundred (200-300) gold coins in the anime, but was exactly 10 platinum coins (equivalent to 1,000 gold coins) in the LN. The LN further notes how the platinum coins shined differently when being placed in the Cardinal's magic bag, along with gold coins he already possessed.