1) I think all guns in anima are called black powder weapons by default. Remmeber, some in anima may have more adavance guns but most people won't understand what a gun is so they just called them from what rummor says. And I'm sure guns are just a rumored lost tech (or logia whatever the word is).
The range weapon technology in Anima itīs the same like in any other fantasy worlds, but the ambientation feeling is more like Reinassance and so black powder pistols, muskets and cannons are the maximun expression of power. But this applies in a general context. There are other lurking powers with a higher technology. As I have said Lucrecio is the most prosperous land and they have recently researched and designed Zeppelins. But Lucanorīs secret tech level is higher thanks to Wissenchaft. They have Lost Logia they find but also they design their own weapons. Needless to say Wissenchaft has powerful machine guns and grenades as well as some more high-tech/mistical goodies.
2) oh, he didn't give up his throne but somehow is not the heir anymore? Come on, fantay filight moved the due date of the english book back to august and I don't want to wait that long. Feel free to write a page if you have to but please explain it.
oh and I love high tech/mystical oragnization so picking Wissenchaft was a easy choice
Err... I am too lazy to write a full page

. To sum up fast: The founder of the Sacrum Saint Imperium of Abel was a man called Zhorne Giovanni who unified mankind in Gaia and supported the Church. For centuries his descendants ruled the Imperium wisely, until it came Lascar Giovanni's turn. He was a mad man and a poor ruler (he was used to encite wars, take every woman he liked, and even he made his wife to commit suicide). One of the Warlords (a High general of the Imperium) named Elias Barbados, an a political cousin from the same emperor; promoted a "coup d'etat" agaisnt him in order to capture him and restore the situation. Even Church, and Tol Rauko turned their back to the emperor. So being defeated and didnīt want to be taken as a prisioner (Elias didnīt want to kill the emperor, as the emperor is the first representation of God in Gaia and then the church.). Lascar made his son to kill him against the son will. That seven years boy was Lucanor Giovanni and having killed the emperor (even agaisnt his will))was not a worthy heir to hte Throne anymore (I suppose something to be with the Sacrum Saint Imperium conception). So the next one in the Throne list was Elias, and he became the new Emperor and the Giovanniīs lost the throne for the first time in centuires. With Lucanor being not worthy to the trhone, Elias made him the prince of one of the most important lands in the Imperium: Lucrecio. The actual Empress: Elisabetta, is only a 12 years old girl and is Elias daughter. The fact of a woman occupying the Throne is bad seen by some lands, some Warlords and even the Church, and is the cause of the actual crisis that suffers the Imperium. And here is where Anima Tactics action starts.
Anyway, Anima fluff is far more larger and more interesting than what I have told you

This is only a piece of the story.
can you give some hints at what is to come for them. I know celia is going to have lv2 haste

At least two more characters (probably both for Saga II, one for sure but I donīt know if there is still some Wissenchaft love left in Saga I). One of these characters is something special. You see, with Saga II Anima Tactics is going to introduce to the game Beasts and invocations as well as center the game in factions. There are confirmed two beasts: an Hecatondis (a teen feet metal golem with own mind, a remain/magic weapon of an a centuries ago extinted powerful human kingdom) and an Slaughterer (an undead golem, gorilla like shape, with killer instincts. Probably Dark alineation, Black Sun faction). Well, the fact is that Wissenchaft have a more high techie aproximation to beasts

That is, one of the characters is going to pilot a Wissenchaft Gear. For gears think about Shirowīs landmates with a little bit of steampunk feel.

And it is not the only gear character planned...