I got a few questions

1: What is the source of ninjutsu magic is it ather or something else?
2: is the ninjutsu attack only those we get ingame or can we make them take other shape in rp? like a normal fireball? (so in a way more like in naruto? with their type of jutsu .. or is it a lot more restricted in this game lore?
3: Can you give me some tips on how they attack and fight in more realistic for rp?
4: what possiblity have ninja? in rp