...
Shin stared at the name of the sender of the message as he can't help but suspect if this sender had an item just like his [Nephilim's Gemini Mask].
Mysterious Elementalist: Hey, how do you want to trade? Through barter, or are you going to buy it with coins?
A player can use a pseudonym when they are registering an account on an Auction House. And with that, he/she can hide their real IGN from others, especially to those unreasonable guys that always blackmailing the player on the other end of the trade.
But a player can only use their IGN if he/she is the inquirer of the trade, so Shin doesn't know if this sender named himself/herself this way, or if he/she had an item to hide his/her identity.
And the funny part here is the current identity that he is using is the 'Nameless Swordsman' which is slightly similar to the sender's name.And after some thought, Shin finally replied at the Mysterious Elementalist.