Board Thread:Naruto Discussions/@comment-25464204-20140925215818/@comment-3306440-20140925224653


 * 1: First Shinobi World War (unknown but won't affect the plot. some minor plotholes).
 * 2: Tobirama faced a group of (probably) powerful ninjas. Even though he's strong, it's hard to face many enemies alone (who are quite powerful).
 * 3: Not mentioned, not that it matters.
 * 4: We never know, but in his old age he proved himself capable of defeating those reincarnated shinobi. (part 1)
 * 5: ---
 * 6: Like what Marc Zaddy said.