@Spoiled but he killed him with his blood at the end and said "Let's get out of here, we can't let the sun flower wither" that means that the flower is still fine at the moment even if the boss is dead??
@Ett it probably doesn't wither right after the boss dies, but rather a few moments after. That or it just means that the poison hasn't fully killed it yet, and its just on the verge of dying at that very moment.
@aerylazy yeah, but that just makes me question why not using the blood from the start and go take the flower quickly after... Idk I will just treat it as an error from translation or something.