Hehehehe (¬‿¬)
More spoilers
That gate contains all the shadows that was with the previous shadow monarch. Another captain will appear in those shadows( I forgot his name). They will help him with the war against the 3 monarchs, the woman(insect), the muscular guy(beast), the old man(frost)
I know only too well, that's the reason why I was cackling (≧∀≦)
Hahahahahah, I know I can sense it <(￣︶￣)>
Guess it was obvious <(￣︶￣)>
Guys I tell you, that Gate is dangerous