Dumbledore was banished from his country. Actually, he was banished from Europe, the reason being all the sex that he had been participating in. So he was teleported to Ninjago. Where he got found by an old man with a beard: Sensei Wu. While Dumbledore was training hard to be a ninja it was nothing he couldn't do. Due to being in the army. After some time he started to have feelings for the older man. Dumbledore then started training to please him.
He never questioned this "training", no matter how weird it may seem.
"wear these cat ears and rub my feet." Said Sensei Wu. Dumbledore complied eagerly, hoping that one day he'd become the best ninja ever. Wu liked to pretend that he was doing this for Dumbledore's improvement and training, but he secretly had a slight crush on the younger man too. After a while, Dumbledore was done with all the requests. He wanted him. And now.
"Dumbledore come here" Dumbledore was there as fast as possible, eager to please his crush in anyway. Sensei Wu let out a small smirk that was not visisble for the younger one.
