Ninjacoin has a 30 second block time, which means fast transactions.
Ninjacoin has a private blockchain, nobody sees your money except you.
You can restore a deleted Ninjacoin wallet with your view key and spend key.
Ninjacoin is creating blocks every 30 seconds, as opposed to every 10 minutes. Your money travels 20x faster on Ninjacoin than on Bitcoin or BitcoinCash.
Ninjacoin has the same privacy features you'll find in Monero. Every transaction is private, by default.