Sad news. Due to the new content rules on Steam, the Defeat Events DLC will soon be removed.
As you may know, Valve no longer allows non-consensual sexual content. I haven't found an official announcement, but you can learn more about it here.
I must admit that the defeat events in Cursed Pantsu do not look very consensual. Unfortunately, nothing can be done here.
Those who own the DLC will keep it. However, if you haven't added it to your library yet, you have a few days to do so. The DLC is free, just press the button.
If you haven't purchased Cursed Pantsu yet, now is the time! The DLC will never be on Steam again.