Ah, Player! Good, you're still here.

A letter from Grunn just arrived. That idiot. I mean, he's a genius, but...still an idiot.

It seems we don't have a complete set of Defender's cores after all.

Player: "Wait, we don't?"

Grunn says he "deduces the existence" of some other varieties of Defenders. I think that's Grunn-speak for "completely missed."

We need intact cores from a Light's Defender and a Shadow's Defender.

I know, this is hardly your fault. But...I still have enough "discretionary research funds" to make it worth your while.

Player: Accept.

Grunn might be an idiot, but he's a very clever sort of idiot.

Note this part of the letter: "The Light's Defender and Shadow's Defender do not coexist...."

"When the Light's Defenders are present, the Shadow's Defenders hide themselves, and vice versa..." Hope that helps.

Player: "I'll solve this riddle."

You look weary. Those Defenders are tenacious foes, eh?

Still, your previous experience must have helped. Did you get all the cores?

Player: "Here you go."

I said five each of the Light's Defender's Core and Shadow's Defender's Core, right?

And...the Defenders of Light and Shadow do not appear together, I know I mentioned that...

Uh, you can count to five, can't you, [%userclass]? Aah, forget I asked....

Player: "Yes, yes, I'll be back."

Five! That's five each, and we have ten cores here.

Blood for blood, as you soldiers say! Aaaand here you are. It's the reward I promised.

I hope you find it to your liking, Player. It seems the sort of thing you'd need.