These weapons have almost never been used as they are references no one gets.
Nagista Narukami: Glory Sword. It's a powerful sword, Referencing to Mabinogi's Glory sword.
Travis Loriagino: The Miracle Matter sword is pretty much just a Ragnell in a black color. His huge nail is generic and self-explainitory. His tome is Bolganone.
Rachel Elouche: Too many tomes to count. Look up fire emblem tomes to see how many you can find. She kinda has them all.
Sivart Loriagino: Same sword as Travis, but Tome is Worm.
Elizabeth Narukami: All the dark tomes for Fire emblem really.