Power Girl and Supergirl in: Solar Influences

Earth's sun. For Kryptonians living on Earth, it is a source of immeasurable power, power they use to protect the planet.

Kryptonite. For those same Kryptonians, their most glaring weakness; while the radiation given off by these alien shards of rock is harmless to earthlings, the effects they have on Kryptonians can range from devastating to outright bizarre.

In this universe located in the lesbian multiverse, both the sun and a new form of Kryptonite will have a unique -- an profound -- effect on two Kryptonian visitors -- Kara Zor-El, or Kara Danvers, this world's Supergirl; and Kara Zor-L, also known as Karen Starr, or Power Girl, originally from the Earth-2 neighboring this universe, who now calls this world her home.

And with some alterations, this Kryptonite has the potential to affect more than just Kryptonians...