In the bustling city of Fuyuki, a secret battle rages in the shadows. The Holy Grail War, a brutal battle royale, pits seven mages, known as Masters, against each other. Each Master summons a formidable warrior from various eras as their Servant, all vying for the ultimate prize: the Holy Grail, a wish-granting artifact. Emiya Shirou, an ordinary high school student driven by an unwavering sense of justice, finds himself unwillingly pulled into this deadly conflict. One evening, Shirou witnesses a fierce battle between Servants. The clang of steel and the crackle of magic fill the air as they clash. Mortally wounded in the chaos, Shirou is saved by the enigmatic Tohsaka Rin and her Servant Archer. In a desperate attempt to protect himself, Shirou accidentally summons his own Servant, Saber—a noble and beautiful knight with a mysterious past. As Shirou and Saber navigate the dangerous Holy Grail War, they form alliances and face numerous adversaries, each with their own ambitions and secrets. The bond between Master and Servant deepens as they confront perilous challenges and uncover hidden truths.

According to Nasu, Fate/EXTRA is a JRPG which takes place set in an alternate universe that split from the Fate/stay night timeline in the 1980s to 1990s. The Story is set in the in a school called Tsukumihara Academy, a fictional place existing with an artificial environment called the Moon Cell. There, the Moon Cell orchestrates a replication of the Holy Grail War using a system called Serial Phantasm or SE.RA.PH, which handles the summoning of Servants. Servant data is taken from the Automaton (Moon Cell Automaton), a spiritual computer system built on the lunar surface by a pre-human civilization and discovered by humans in the year 2032. The Automaton has monitored and recorded all occurrences on the Earth (including the activities of human heroes) since time immemorial. In this sense, it is similar to the Throne of Heroes, but it's possible to summons beings which aren't present in the Throne. Each of the 128 participants in the war must duel the other Masters in a place called the Arena, where failure results in deletion from both the real and digital worlds. When only one remains, the "Holy Grail" shall grant the victor's wish.

The first half of the remake of Type-Moon's classic doujin game Tsukihime, featuring a rewritten scenario with major differences in its setting and plot, as well as several new characters. This release includes the Near Side routes (45 hours with voicelines, double their original length).

“Near the end of the Showa Era. (Late 1980s) In the old mansion rumored that a witch lives, Aoko Aozaki who just started learning sorcery and her teacher, a young mage Alice Kuonji, lived together. But as if he was guided by an invisible string of fate, a young boy called Soujuurou Shizuki joins them and a strange communal life begins…” “Late 1980s. The golden age full of brightness and spirits. The boy who came to the urban city passes by the two witches who live in the present” “The boy lived a really normal life She lived with pride and confidence The girl lived hidden as if she’s asleep” [From Tech Gian Magazine translation at Akihabara Channel]