I sorta play Haz and I did play him agaisnt Tager before, but im not sure if this will help...
DO NOT LET HAZ JUMP. Haz has options when he uses (super)j.6D. He can go behind you, directly in front of you while in the air, or do this crazy circle using the end of ouroboros as a fulcrum... I find that Tager has more options while Haz is using his ouroboros. While haz is in the air, try to backdash through his overhead j.5B or his j.2C. I find this more effective than IBing for some reason unless you are IBing the ouroboros (backdashing ouro is not a great idea since he can retract and do it again), or it might just be me. If you manage to backdash his ouroboros followup (j.5B or j.2C) it will now depend if he directly goes to 3C (in this case, try to j.5B with Tager if that is humanly possible for you, or try to 360A it. No matter What you do, your first priority if he tries for 3C is to NOT GET HIT BY IT. This is because almost all of his BnB combo starters start with a 3C) or if he pokes with 5.b. 5b is dangerous because you won't be able to backdash punish it, and I am pretty sure it is jump cancelable, not to sure tho... But in this case, 360A works really well. If he lands and tries for any C move, just punish with 360A, 720 (if you can get if out fast enough) and backdashing 2D works sometimes, but I don't recommend it.
Also, once Haz is in, try to not let him run away. I noticed his close game is very weak without an ouroboros startup since he does not have a good dash and the startup on most of his moves are really slow if he doesn't stun you and get in with ouro. If he is magnetized after a failed ouro and tries to run, 8/10 times he will jump and backdash, and you can collider him for it.
Jayoku is really great for Haz :P I use it all the time in the middle of a faulty blockstring, on wakeup, or when other players airdash towards me to try and get in :D Tager has to be patient in this case. Tager should try to refrain from jumping because he can zone out the air with ouro. if he grabs you with the ouro and launches you to the wall then you are about to eat a serpents coil (50 heat tho).
In the end, Tager should just be patient and wait for his chance when Haz ouros or screws up on an opening. If you want to play offensive you are most likely going to get hit and that wont help your situation. Not a very great matchup for tager tho. I haven't played any amazingly great Hazamas with Tager yet. Im safe ^.^
Edit: my bad when he gets in with ouro and you block everything and he tries to run away punish that, and if he tries to zone with ouro you can use SLEDGE! just remembered..... :/ so if he tries to j.6D you can b or a sledge doesn't matter, this makes things more interesting because if he tries to get in like that, the more he does it, the more you will be able to get closer to him!