Hello, this is a list of all the ways to annoy Zero Kiryu and possibly get yourself killed in the process, I am in fact a huge Zero lover, but Zero is just too easy to annoy. Enjoy :D
1. Purposely give yourself a paper cut and then lick the blood in front of him
2. Take pictures of Yuuki and Kaname sharing an intimate moment and give them to him
3. Ask him, "Why so serious?" and forcefully make his mouth form a smile
4. Steal his Bloody Rose gun
5. Call his eyes pretty and ask where you can get contacts like that
6. Tell him that since Yuuki is no longer with him, he can always suck your blood
7. Give him medication for his deep depression
8. Give him a calendar so he can mark the days until he turns Level E
9. Constantly remind him of how he promised to never let Yuuki turn into a vampire and failed
10. Narrate everything he does in a sing-song voice
11. Ask him, "Who died and made you boss, huh?"
12. Claim to be his new partner and follow him around everywhere
13. ...Be sure to do a terrible job
14. Ask him if he thinks Kaname is sexy
15. ...Don't believe whatever his answer is
16. Tell him Maria wants him now that Ichiru is dead
17. Tell him Yuuki is pregnant with Kaname's baby
18. ...Pet his shoulder, telling him he should have made his move sooner
19. Call him lame because he let Yuuki get away
20. Get him a shirt that says "Daddy's boy" with a picture of Kaien Cross plastered across it
21. Make him read Twilight
22. Demand to know why he can't sparkle
23. Give him personal theme music and sing it whenever he enters a room
24. Whenever he says something, reply with "Said the vampire"
25. Scream and run away when he gets angry at you
26. Ask him why he doesn't get a cool scythe like Yuuki, because guns are so overrated
27. Go on and on about how great various vampires that he despises are
28. Make him write a report on every pureblood vampire that has ever existed
29. Spray holy water on him to see the effect
30. Do all of the above... all in one day