Indeed, what Rose gave to Hilia was still a foolproof method of unraveling.
But its target wasn't the Starlight Seven-Tower Array model in front of her; it was the entire Starlight Seven Towers of the Divine Magic Academy.
The Modest Tower is the Rest Starlight among the seven nodes, belonging to the weak point of the array in the legend of the Starlight Seven Towers' construction, said to be the resting place after the creation of gods.
From outside the array, it's possible to unravel the array with a foolproof method.
And inside the array, near the node, it's even easier.
However, since the array enveloping the entire Divine Magic Academy is quite large, a simple unraveling method cannot stably unravel it.
