I like to think Law's eyes turn golden yellow (like in manga) whenever he looks at Luffy, since he's got grey eyes in the anime. It would be so cool because yk the Moon reflects the Sun's light, and Luffy is officially Nika, the Sun God.
forever thinking about how michikatsu joined the demon slayer corps, created moon breathing, and unlocked a mark in a brief period of time, and yet...
his envy for yoriichi's abilities kept him blinded to his own talent – each time he spoke of himself, it was done so in comparison to his younger twin:
this was something that stemmed from the time he was a child, and witnessed how yoriichi felled their tutor with a wooden sword.
it isn't that he doesn't know how strong he is – i'm sure michikatsu, of all people, would be painfully aware of his own strengths and weaknesses. it was just that in the face of someone much stronger, a "one-of-a-kind prodigy"...
and most of all: a twin – a spitting-image reminder of how that could have been him if yoriichi was never born – there seemed no other way for him to define his own abilities without comparison.
in the same way that the glow of the moon cannot exist without reflecting off the brilliant light of the sun.
Sun and moon character dynamics are more than “cute ray of sunshine” and “angsty gay” honestly, and if you think that then you’re severely missing out on all the trope has to offer!! I have opinions on this!!!
A sun character isn’t just peppy and happy all the time, for example. They’re full of all the emotions, just like the moon, but they tend to show it. If the sun is sad, you’ll know, because the sky will cloud over and the light will disappear. If you make them mad, they might shine brighter just to spite you, and burn you, and then laugh at your expense before softening at the end of the day and being so beautiful that you forget they ever hurt you. They’re a showoff; flitting here and there and trying to grab your attention. They want you to see that they’re trying, so hard without fail, that they will be there for you every day, no matter how much you might wonder if the world will go on. Loyal to a fault, they beam at you as if you’re the one shining…and you forget for a moment that you’re only reflecting the light they gave off in the first place.
Moon characters are different. They’re filled with quiet, gentle glowing, just enough to give you initiative to keep trying on your own. They won’t push you; they would rather you came with the courage to continue through the dark yourself. They hold their emotions close, knowing eyes asking you to look a little closer and see, because they’re certainly not going to just tell you how they’re feeling. Shy and yet so stubborn, they hold steadfast and will stand their ground when challenged - their dark side is not one you want to mess with. Unlike the sun, they come and go whenever they please. They know their limits, and they won’t force themself to be there for you when you don’t need them. Make no mistake, however - when you have the moon’s light, you will never be lost. Bathed in gentleness, you will never be blinded, left alone, or burnt - they may be quiet, and they may come and go with the tide, but they will always return.