I have been enjoying 1.5C but i have some questions:

1.How does the detector skill work exactly ? I unlocked it but even after testing it with the tv ghost (booth before and after pressing) and not a single sound(that i noticed) happened.

2.I saw on the guide that you can "Breaking Kat", but after the red lining i can't find any mention of that, the most logical conclusion is that you can break Kate, but i couldn't find any kind of hint to that, is it another npc or not implemented ?

3.One of the wallpaper's got me interested, i didn't notice when, but a image of Anna, sitting in a park bench with cum all over and in her was unlocked ! Is it a unlock able scene ?