Right now probably Brynhildr / Ares depending on what you're doing. But since Ares will have her awakening soon the problem will show up again. The combo Mars + Amateratsu would be better for sure... But still, reaching the def cap is an upgrade, no matter what.
Now about light, with Tsuku your team would be complete. I was doing all the content with my light team without any issue until now, but with Tsukuyomi (just got her with this miracle ticket) and -50% debuff it became really easy now. Her blind is also very strong and add to the already good light' staying power.
Also she will fit in any build in the future (the only time Artemis is better is with Dart + relic weapon)
I'm just switching between Michael and Raphael depending on the content and that's it (if you're only doing Dark event you'll more likely use Michael).
So yeah, Tsuku is a go! go! for me. But maybe i'm biased, just as Blubbergott![]()