I'm looking for the male principal sex related images but all I can find are the ones for the female principal, if anyone could kindly point me in the right direction.
I'm looking in Schools\Smallville\Images\EventPictures\PCGeneralSex
I'm seeing them in Schools\NormalSchool\Images\EventPictures\PCGeneralSex\*\Male and subfolders (depending on partner's organs), and in some cases there's also Any and MaleFuta folders which may be applicable depending on what you're looking for.
Some sex acts don't make sense for a male principal, e.g., D_Dildo_Vag or Fuck_Trib, so there aren't male principal folders for those.
If you're looking for generic interactions (Ask for Sex / hypno) - those are the ones^. There's a manual on GenSex Image packs in Docs.
Most other events link directly to their images, so could be anywhere.