National Fate Arena: I Summon Bruce Lee from the Start

[National Fate] [Alternate Universe] The protagonist transmigrates to another world and gets a rather unserious System that summons characters from Earth's films, TV shows, anime, history, and mythology to fight. Bruce Lee vs. Japanese warriors  Lam Ching-ying vs. a hundred ghosts  Fahai vs. the nine-tailed fox What do you mean, an F-rank summon trouncing an A-rank summon? What do you mean, an F-rank summon barely beating an A-rank one? An F-rank summon is guaranteed to beat an S-rank summon? An F-rank summon has the advantage against an SS-rank summon? What is this summon called Jackie Chan? And what is that summon called Lam Ching-ying? … Why are all his human summons so ridiculously overpowered? The demon samurai of the Japanese empire have been wiped out? Even the cherry blossom tree demons, Amaterasu, and Hachishaku-sama are gone? What do you mean, the Japanese empire, shaped like a turtle island, sank beneath the sea to keep Atlantis company, and all its people were fed to the fish?