Natsukawa Tora transmigrated to Type-Moon. Lacking magic skills and connections, he was busy working odd jobs, initially thinking he'd be the most pathetic transmigrator. But everything changed after he was chosen by the Holy Grail and summoned King Arthur (Old Saber). Especially after the Holy Grail War ended, and Old Saber became his [Special Forces Machine], turning him into Old Saber Superman. ...On a certain day, in Chaldea, in the same familiar corridor, around the same familiar corner. "Sajyou Aika, don't come any closer! I don't know Arthur, really! -- Emergency call!" [Being being teased by a friend's old face [I'm telling you, Souji is super cute]]