Read on Twitter
revamping and adding onto this thread because its so. incoherent and hard to follow i promise im better at writing than this 
major spoilers ahead! here's some yasu exploration https://twitter.com/iLikeYasu/status/1390759697897099273
major spoilers ahead! here's some yasu exploration https://twitter.com/iLikeYasu/status/1390759697897099273
throughout umineko, multiple perspectives are explored, and thus we get a peek at all the ushiromiyas AND yasu. no person can be fully good or evil, therefore the narrative presents ushiromiyas in grey light of varying degrees.
yasu's world, though, is black or white - she observes grey as an outsider, but any "grey" within herself is shoved onto one of her personas. these personas are collections of her traits, either made presentable to the people she wants to appeal to or simply serving a purpose.
thus while there's conflict in yasu-adjacent characters' worlds, it doesn't concern yasu herself because depending on what the conflict's matter is, she switches to a persona that isn't directly related to that conflict OR burdens another persona with it. yasu's world is "pure".
now it's stated multiple times that in yasu's world, she is special. she can speak to nonhumans, she's capable of magic and later on grows into a powerful witch. i believe this is somewhat influenced by her religious beliefs, in a similar vein to maria.
then there's battler, who's very much like her. they're similar in hobbies, in opinions, and later in feelings. therefore, she comes to conclude that just like her, battler is also special, which is reflected MANY times throughout the games. in a way, he is "chosen" by her hand.
because of this, she also goes on to compare their life situations as she herself perceives them; in her eyes, battler is unfortunate because he is forgotten by his family. yasu copes through relating to and comparing herself to the people she adores in attempts to get closer.
and therefore, to yasu who struggles with self-identification and finding her place in the world, being able to relate to someone she adores is comforting. she comes to believe that someone who cannot be "seen" will see and save her who, too, cannot be "seen". battler is special.
thus, her, and later beatrice's, purpose was created. shannon carries the "bud of love" in her heart and dedicates herself to it and the future she wants to have with battler to continue his "existence" until it's confirmed that the family hasn't forgotten about him.
battler, whose situation she thought to be so identical to her, is actually having a great time without her, which is acknowledged by both people outside and inside the family. they're not that similar to begin with. he *is* being "seen"!
in the pre-1986 world of yasu's, the fact that battler made a promise and the fact that he never arrived directly contradict each other, thus she immediately jumps to the conclusion that one of these facts is false,
and because his absense is something she can directly observe, she comes to discard the existence of the promise. the bud of love and the now illusionary promise are passed onto an equally illusionary being, unable to exist unless acknowledged and "seen" with love.
in yasu's world, no contradicting truths could coexist. that extends to every part of her life, including her wish to only exist on the meta layer, and yet even that is a contradiction in on itself because a coin cannot have one side. fantasy cannot exist on its own.
which is what the great court of illusions was truly about and why the entirety of ep6, the elder beato-chick beato split AND erikas appearance were necessary for yasu to accept that contradicting truths and contradictions as a whole can coexist, be it in a tale or in a person.
what im saying is
