I think the game was made in Korea.
There is a English version of it.
The game is in 2D. (Anime style)
It have Quest, PVP and AFK Room or something, people can go into the room and fight each other without dying.
There is also a soccer mode if I remember correctly.
There are four elements in it.
Fire, Water, Wind and Earth.
I remember that the Wind and Fire character are male and they use sword.
For the Water element, I think it is a female character and she rides on a broom while attacking bare hand.
We can upgrade our cards to higher level.
There should be axe card, shoe card, magic card and some others.
Does anyone know the game title?
I can't really remember it. It is a very old MMO game. Not sure if it still around.