well as you know that the world of MSN especially the world of Mundus Magicus is such a weird world so in any case care to share a brief explanation of each locations in MM and where did Ken get the ideas on it

P.s. this is for the Negima RP in OMF

I know the cities are named after places on Mars. Which leads me to believe Chao= from Mundus Magicus. Sorry if I didn't help with anything in the RP.

well that is ok mongo but I am expecting answers for either bucho-san or kaev

There are a couple of new ones that are on the map at the end of ch 231 in Tempe-Terra
from Greek Mythology
Clytemnestra
(Will fill in later)

Tantalus
A man who was a friend of the Gods, and was allowed on Mt. Olympus (there is also an Olympus Mountain Range in the region of Tempe Terra)
One day, for some bizarre reason, he decided to kill and cook his own son Pelops, and serve him to the gods to see if they could tell that they were being fed human meat.
The gods knew right away (except one who ate Pelops' shoulder by mistake) and punished Tantalus by sending him to Tarterus, to forever stand in a river under a grape vine, unable to eat or drink anything, as the grapes hung out of reach, and the water would recede if he tried to drink it.
(I wonder if there is any connection to the word tantalizing?)
As for Pelops, he was resurrected by Zeus, but had to be given a metal shoulder, to replace the one that was eaten. (I can't remember which god it was, but they were pretty absent-minded, and only a few of the Greek deities could fit that description)

Clytemnestra was the wife of king Agaememnon of Troy (I think it was Troy), in what is now Turkey.
She murdered her husband with the help of her lover Aegisthis, and was later murdered by her own son Orestes, who had been taken to safety by his older sister Cassandra as a small child.
Orestes BTW also has a city named after him in Mundus Magicus.
There is a similar thread on OM forums as well.