The point of view character of the story, a thirty year old office worker with cybernetic enhancements. Due to genetic engineering, she looks like a twenty year old. As her worklife is pushing her to an inevitable burnout, she finds herself transported to another world.

The second character introduced in the story, she is Irene's travel companion. A blue haired woman who looks like she's at most twenty years old while actually being in her later twenties. Merely observed the existence of outworlders before she met Irene.

Third character introduced in the story, the keeper of a magic shop in the village of Polur. Forced to take the position by her family. Likes to act theatrically when dealing with people she doesn't know, thinking that's the best way to make a good impression.

She comes from a long line of mages, but Karine is more a crafter of magical items and a magical researcher of sorts than a caster of magic herself.

Fourth character introduced in the story. Karine's assistant. Wears strangely ornate outfits day in day out, betraying her probable noble lineage.

Likely harbors feelings for Karine.

Polur is a sleepy village of a hundred people just far enough from Grendelle, the capital of Fortalie, to not be considered a part of its territory. Mainly notable for its well equipped inn, its magic shop as well as its grand church dedicated to the Six.

Even though it's close the ruins of a town, it's unusually unpopular among adventuring types.

General term for all those who've been transported between worlds. There are usually more than one of them in the world at any given time, with summoned outworlders being the most common. This is because even though the cost for summoning one person can be immense, the power and innovation they grant to the host country is often considered worth the price.

Summons, reincarnations, and Irene, the lone "brute forcer," are all considered outworlders.

Named such by Irene after she found out the function of the particles that seem to permeate all life in this world. They are used up whenever magic is cast or magical items are used, converting the particles to various magical effects.

Rune stones are found all over the world, but this particular type refers to the rune stones found in tubs, street lights and other household and general items. Some of them require a person to activate them by touching them, others are activated by proximity.

What these types of rune stones do is convert the magic particles found in living beings to a particular effect, such as turning cold, dirty water into warm and clean water.