Slash	Strike	Pierce	Agi	Bufu	Zio	Garu	Hama	Mudo
--	--	--	--	--	--	--	--	--

You will have to fill it. Of course it's a little difficult to understand if it's been a long time since you've looked at your personas weakness or played the game, so I'll try my best to explain everything here.

In the box under the affinity, you can enter a lot of things. Well, only one by tab.

-- means you have no particular strong point or weak point on this affinity. You'll be hurt by it, or it will miss, but you wont block or be down.
Wk means you're weak against that affinity. If an attack of that affinity hits you, you'll be hurt pretty bad and go down. If you're hit a second time while you're down, you'll become dizzy.
Str means you're strong against that affinity. If an attack of that affinity hits you, you'll take less damage than you're supposed to.
Null means you nullify that attack. If an attack of that affinity hits you, you'll block it.
Rpl means you repel that attack. If an attack of that affinity hits you, you'll counter it.

Now with the affinities ;

Slash is a kind of attack that well, slash? It's part of the physical affinities. Your persona can do it with his skills but you can do it too if you've got like, a sword or an axe? I_I It takes some of your HP each time you use it.

Strike is almost the same as slash, but it's more like... stab. It's also a physical affinity. Not only your persona can do it with his skills but also you, with a fleuret or a lance or whatever. It takes some of your HP each time you use it.

Pierce is the last of the physical affinities. Not many persona can do it, but you can as long as you've got a gun or a bow. It takes some of your HP each time you use it.

Agi attacks are related to fire attacks. It's more of a magic affinity. It takes some of your SP everytime you use it. Agi personas tends to be weak against Bufu or Garu attacks.

Bufu attacks are related to ice attacks. It's another magic affinity. It takes some of your SP everytime you use it. Bufu personas tends to be weak against Agi attacks.

Zio attacks are related to electric attacks. It's one more magic affinity. It takes some of your SP everytime you use it. Zio personas tends to be weak against Garu attacks.

Garu attacks are related to wind attacks. It's another magic affinity. It takes some of your SP everytime you use it. Garu personas tends to be weak against Zio attacks.

Hama attacks are related to light attacks. It's another kind of magic affinity. It takes a lot of SP each time you use it. Hama personas tends to be weak against Mudo or physical attacks.

Mudo attacks are related to dark attacks. It's another kind of magic affinity. It takes a lot of SP each time you use it. Mudo personas tends to be weak against Hama or physical attacks.

Recovery cast are another kind of magic you can take. It's mostly support magic, like healing skills and status ailments recovery.

Enhance cast are like recovery casts, they're more like support magic. They can lower enemy's stats and raise your team's.

Tactical Support is something totally different from the previous affinities. If you take it, you can take only this one. It's also support but your character won't be on the battleground. We don't need too many people with tactical support skills so ask the Admins before.