
short terms: Lilian still has memories of Iris's life. Shiragi is still remembering Sara's life.
long term:
Lilian - formerly known as Iris, had hatched from her chrysalis phase, or otherwise "reborn". Thus the name change. Because she's a vampire/papilio-daemon, her memories are not altered by the rebirth. (In her life as Iris, she did although have some memories recalled.)
However, in Sara's or Shiragi's case, because she is human her memories of her past life have not stayed with her. But I'm sure with time her past life memories will come back just as it did in previous chapters (ch. 19 and ch.23)

Hi translators, in korean when others refer to people who are older than them, they have certain honorifics. the word you use, "Senpai" is not korean, but japanese! please fix this.
Female to older female = Unnie (언니)
Female to older male = Oppa (오빠)
Male to older Male = Hyung (형)
Male to older female = Noona (누나)

I might perhaps be very incorrect but- if you're reading this for *just* the yuri, it can be seen as fetishizing them - or at least for me. I am a lesbian, and it makes me uncomfortable knowing people just want to see two women get together. I don't care if you're a man or woman, lgbtqia+ or anything, but I do care if you're reading this JUST for the gay. Rather, please read it for the plot at least, and I'm pretty sure they'll end up together. Sorry there are men in a wlw manwha or any manga/manwha/manhua, but please remember, read things for the plot, and not for the ships. Also I'm sure it's normal for males to be in a story, since men do exist.
Maybe I'm just overthinking and bring sensitive, but I just want you guys to actually appreciate the read, and not only the relationships.
their relationship is so flawless my goshaksjdj they're made for each other ╥﹏╥