A thread of instances of Mikasa being the antithesis of Ymir and how that plays into Ymirs conclusion. (and Happy Birthday Mikasa!) #MikasaAckerman#Mikasa
Flower stained by blood is remembered by Ymir before dying.
Flower being washed by the rain(that could have possibly had Zeke's blood in it too, because of the blast).
Ymir loses the will to live.
Zekes will to save the world is strong.
Ymir saving royal blood
Also completely forgot to comment on the flower thing. I've said before the flower represents beauty and it's stained by blood(cruelty). In Zeke's instance it could be that he is trying to wash away the cruelty.