'Curing' Supergirl.

You have a lot on your plate and a lot on your mind. Metropolis is it's usual self. You help out in ways big and small, save a cat from a tree, help an old lady cross the street, respond to a distress call about a kaiju down in the bay area, help build some low income housing...

All the while your thoughts are on a trio of beautiful blonde kryptonians. Your desire to be with them, to be there for them. It's all painfully distracting. Reminders are on the regular. More than a few gossip magazines have a picture of Supergirl in your arms and some salacious headline that doesn't even begin to scratch at the truth of your relationship, and when you talk to some citizens or reporters they all can't help but ask about her. You've had good media training, you play it coy, don't lie but don't say too much. Which hurts, because no-one knows about Power Girl or Satan Girl. You can't talk at all just now about how both Kara Zor-El and Kara Zor-L are your girls, how Satan Girl is chained up and begging for your cum to survive. It's wanting to brag about the intense power fantasy that is your life, the most first world of first world problems, but that doesn't make the itch go away.

So you use that energy to ponder a particular problem. Kara Zor-El is to stop being Supergirl. You've played the 'man in charge' card, you won't let her mentally destroy herself like this anymore. But you know for all that she agrees and knows you are right, so long as she has the power bestowed by her heritage she will feel that she must be Supergirl. The power has gone from a blessing to a curse, and she will never be able to live in peace until, like Power Girl, the power is gone. So as you help and fight through your day you also think and research. Kryptoanian physiology has many bizarre interactions with powers in this world, so there should be something that could strip her of her power as well.

When evening is drawing you have your answer. Gold Kryptonite. One of the rarest forms of the stuff, and with physical contact it completely strips a Kryptonian of their power, blocking them out from recieving the strength and speed bestowed by the sun. If you use this, Kara Zor-El will be an ordinary girl.

Well, hardly ordinary you scoff. Thinking of her kindness, her beauty, the many virtues she has that will shine when no longer burdnened by the power of a god. With the speed of lightning you race back to your own home and your secret collection of artefacts. You have collected much in the way of the strange and powerful in your own adventures, and the image of the Gold Kryptonite seemed familiar. It is buried within a collection of ore you obtained during an advanture on Thanagarr, but the small rock is there and feels heavy in your hand.

With this, you will be the man who destroyed Supergirl.