After the events of Fate/tiger colosseum UPPER Saber decides to leave and to have some peace along the way ends up helping the owner of an antique shop that gives her the gift of a mask as a form of gratitude. But it's time to go home and entering a new fight against Gilgamesh, the mask is placed on Saber by accident, Could Shirou and and his friends survive this strange night?

What happens when a beautiful android, wife of one of the warriors who is a friend of the hero to protect peace on earth and in the universe, just finding a locked mask that leaves anyone crazy in whom the use and end up causing problems for people around you? Read and find out for themselves. Story made by Chojinryu750 of .