🎶We're just jump up kick back whip around and spin! And then we'll jump back, do it again!"
AnnnyyywaaAaaay...
Yep. Ninjago. The LEGO TV show with the crazy-teenage ninja (and one biologically 10 ninja) with powers and some pretty crazy villains.

So, I have two ideas.

1. Children of the ninja (this isn't title)
So it would be that maybe 15-20 years have passed, and the kids live in a monastery. All of Ninjago had to be evacuated and abandoned because of an enemy that was literally 99.999% impossible to fight, let alone defeat. They are completely invisible, fast, strong, and eat meat. Specifically, human meat. The kids do not actually know who their fathers were/are,cans lead fairly normal lives. For some "unknown" reason, their fathers died before or only as they were babies. The kids are attempting to find the identities of their fathers since their mothers keep it from them, only to find they only had to listen to their Sensei's stories. Suddenly a frenemy from legend that stayed in Ninjago shows up and begs the Sensei to come back and help free his family, meanwhile mysterious men show up throughout the village who all seem to not have a clue time had passed since they last remembered anything.

Crääääp I just gave away probably 1/2 the plot line XD

2. Morro X reader
SCREW IT THERE'S ONLY 2 MORRO X READER THINGS ON WATTPAD I WANNA DO THIS!!
Ahem...
Exactly 3,721 years have passed since the ninja of Sensei Wu started the Ninja League (that might not be correct term), an association where anyone with an elemental power or other speciality can train and prosper to learn how to use it. Since then it has grown to a huge guild of people who were born in it, to people who have grown up having no control over their oddity. Y/N, a fine young lady, is shunned by most for her elemental power. The day is the Day of the Departed, where the once in every-few-lifetimes event of a Yin Yang eclipse is set to happen over the peaceful land of Ninjago. Climbing to a rooftop to watch the fireworks, she sees an interesting scene; a guy in a torn cloak that glowed and you could see almost all the way through. Y/N goes over to say hello and quickly befriends him, but he doesn't disappear when the eclipse ends. Now having a ghost for her closest friend, they both have to work out the kinks for how they are going to get this approved AT ALL with the Ninja League...

Yay or nay anyone??