It's pretty big. It's definitely bigger than the hidden leaf village
Very anoyigly ott big
Naruto has released 8 tails but than was stoped from releaseing the 9th tail by his father the fourth hokage minato namikaze Fabius: in Naruto chapter 490, Naruto singed a contract to release his...
Because he trusted that he could master this power.
it comes from the forbudden jutsu called death reaper seal