Azief had his own fortuitous encounter and each time his Heart become stronger and since he walk the path of Perfection, he never find any difficulty in breaking though.
Only recently that he have reached the problem of breaking through.
And that is also because he was too rushed at the time.
Even before he tries breaking through, at that moment, he knew he would fail. He knows he was lucky most of the time and he thought he would be lucky once more.
Of course, that failure also shows him something else.
That Gate. And the rings.
There is many things that he have that requires a second look.
He had a plan for all of this.
But before that, he needs to solve the matters of the world so that he would not be bothered during his research.
Hikigaya not knowing anything had changed about him then look back at Azief
"I'm just…worried that if you are not there, the world will be unbalanced"