What is "Don-Mogura"?

To tell the truth, there is a reason why I wanted to write a blog is that I beaten a strong monster named "Don-Mogura"with NPC  the other day.
"Listen! I beat them!"
 I really felt happy. Yeah!

Of course I know the game is MMORPG, so if I played with someone, I could easily beat them.
But I wanted to win by myself and was filled with a feeling of accomplishment.



Unfortunately, when I beat them, I used a practice card and couldn't get any accessories.
I will do my best performance in a real stage again.