Even ignoring the location itself, the chance that these magic circles were dangerous was high. However, seemingly without a care in the world, Luvia slid a finger across one of the circles.
With a snap, the circle reacted with a bolt of lightning. As if being drawn in, the lightning arced upwards and struck a ring on Luvia’s finger before being swallowed by the jewel set there. As if nothing had happened at all, Luvia continued her inspection of the magic circles.
Case Files I, Chapter 4, Part 1