Because the cast of Prison School would just hate for things to get all wet and dirty.
Onimai - Wikipedia
Keep your head as warm as your buns this winter with a “panty-hat”
List of Punch Line episodes - Wikipedia
Panchira - Wikipedia
Keep your head as warm as your buns this winter with a “panty-hat”
Nintendo DS on the menu as Japanese prisons get creative to keep ageing prisoners' brains active
Keep your head as warm as your buns this winter with a “panty-hat”
New line of anime panties slip off the animated characters on onto
No panty shots, under any circumstances, please, says anime's