Lucien feels something special, unlike anything he's ever felt before, but also something that appears strangely familiar, a primal desire that moves his entire being.
He's felt that sensation before, just with a much lesser intensity, which makes him also find it usual.
Anyway, he loses some of his rationality due to how much intense that desire is and follows the mysterious call to an unknown place, ignoring Lust's warnings and questions.
In his current state, when his conscience is divided, most of his energies, such as demonic energies and the golden energy of Aylin's naginata, lose some of the influence over him, letting that primal desire guide him like a powerful instinct.
And so, his special vision wanders towards the south, precisely towards the Central Region. Just as his conscience quickly reached Tyrion's prison before, it arrives in the most dangerous and mysterious part of the Blue Star in a few seconds.