This is pretty cool, I haven't read any fiction about Ninjas but it'll be good to get into a tale like this. I also like the outro, asking questions about what lies ahead is a good way to keep people intrigued and kind of harkens back to those old-school serials.
"Will our hero make it out of this perilous trap, or is this the last we see of them?! Find out next week!"
You'll fit in well around here dude, but I was going to say, make sure to source your image used so you don't get in trouble.
Absolutely, the outro’s designed to stoke curiosity and hook readers, akin to the magnetic pull of classic serials.
Thank you for your time here =D