Edward Elric listens to metal.

Ciel wears an eye patch to conCIEL.                                                                                                                      Sebastian's left hand has got a CIEL of approval.

If Keima talked about Elsie with other people and somehow she barges in at random, he would say, "speak of the devil".

If Saber and Shirou end up together they could say that it was "fate". 

Archer is Shirou's ARCH nemesis!

I bet Levi has a CLEAN record!
If Eren goes berserk you should tell him to be "the bigger man".

Motoko eventually came out of her SHELL.

If Gaara was left alone in the desert he'd say, "Don't desert me!"

The thirst is real for Free!

To hit on Lucy you must say, "I have the KEY to your heart".

And Sword Art Online II is just asking to be made fun of.
ie. Kirito is sure gunho about GGO! Kirito's going in guns blazing! Kirito has to bite the bullet! At least he gave it a shot.