Asura: "In this world an very useful spell exists. It's called 'swap'. Just as it's name suggest, you can swap your location. Moreover you can swap a lot of people with you. Only limit is your own mana. You can transport yourself and others even few kilometers away, or if you will have monsterous amount of mana then maybe even hundreds of kilometers in one go. It's convinient to fast teleport numbers of living being or even someone's whole house.
Another spell used to change your location fast is called 'teleport'. It's very simmilar to swap but have one disadvantage. You can still teleport things that are not living beings but you can only change position of yourself. Depending on situation you can also teleport to fem meters away so you can kill enemies or to stay hidden.
Demon's magic is very various and very convinient."
Chron: "If this 'swap' is so useful, then why hadn't I heard about it before? I have heard about 'teleport' but it's my first time hearing the one that you firstly mentioned."
A: "It's due to the fact that 'swap' is reserved only for demon's magic. You can still use 'teleport' with dark magic, but it require created before magic circle as well as a lot more mana in comparision to using demon's magic.
Also if you don't know how to use this magic then using 'teleport' itself is very exhausting and hard. Humans have teleportation gates created but they use magic stones to support it and they are guarded very strictly so it won't be misused and magic stones won't be depleted."
C: "Hmmm, so it's like this. How can I learn this magic?"
A: "Originally only pure-blooded and high ranking demons could use it.
But I think I know how you might be able to use it as well."
C: "Tell me, tell me!"
A: "You need to get something that is related closely to high ranked demon.
I myself have 'something' that could potentially make "close" to that kind of demon."
C: "Don't talk in that way and just show it to me. I'm curious."
A: "It's not something that I can just give away. It's very dangerous. It might even destroy you from the inside. If you say that you still want it then I will give it to you. However remember that it will make a mess with you psychic. Your common senses will be replaced and you might lose your emotions. Do you still want to continue?"
C: "Yes, let's start."
A: "As you wish. Then, bear my Sin."