The first enemy, Archeodemon, has 100% light resist.

Your 1500 ATK DW Orlandeaus can easily solo the event with auto attacks but not if they have holy weapons on. If you have a holy weapon on then it's just an extra step to farm the event by having to use DR or HB the first turn and with 13 NRG runs it'll take a while to deplete an NRG bar.

Small gripe but people will likely be thankful for it.

If your best weapons are holy weapons then that's fine too, just another step between your friends and the Kiyomori that's not a big deal, but no Orlandeau doesn't need any specific elements this time around unlike most chainers most of the time to benefit from elemental chaining and imperils.

Edit: of course everyone is going to just say use DR because it imperils. You're missing the point. If you do this then you have to hit repeat constantly, or worse yet have to select it every time for your friend unit if for some reason you don't have a kitted out Orlandeau of your own by now. If Orlandeau didn't have a light weapon, all you have to do is hit auto once and you're done. There's a big difference there in how engaged you have to be to farm the event with all the 13 NRG stages you'd have to do. Why even have the light element weapon on him when all it does it make things annoying? Just give him another greatsword.

But it's just a suggestion anyways, use whatever weapons you'd like. But no light weapons please and thank you lol