Unusual Pair

This is just a short..fanfiction...i guess...
It's of one of my oc's x Levi Heichou (From Attack On Titan) ((Shingeki No Kyojin))
this contains some yaoi but i don't intend to make it pornographic stuff. Just fluffy stuff.
You can imagine my oc is you, if you'd like.
My oc's name is Kasai Nichou.
He's 19 years old.
He wear's glasses, has green eyes and has short blonde hair.
He's very tall. (Actually, he's pretty much average but, compared to Levi, he's pretty tall.)
He's just cute in general.
He doesn't go out and fight titans, he's more of a house cleaner. He takes care of the place while they're out and helps Levi with paperwork and such. Levi is fond of Kasai, one reason is because Kasai cleans and does a good job when cleaning.
If you have any helpful criticism, (either about my writing, the story, or my oc) i would love to hear it. Just please, be polite about it.