there are some distinct differences in the storylines of LEYLOST and CANON genshin that i will try to put as succinctly as possible in this post.
aether fucking sucks. all my homies hate aether.
lumine is fine but her moral backbone is a chocolate eclair.
xayi is the first, last, and ONLY masc-presenting mirror maiden.
capitano is still, in a way of speaking, alive. (we still have to discuss how, and why the honor aspect isn't lost on us.)
tartaglia is still his weirdo self /pos. he just has some unresolved issues.
wanderer answers to "hat guy" ONLY to kids, such as klee.
klee recognizes alice as mom still, but is very sad about it.
kaeya and diluc are STRICTLY brothers.
diluc and collei are adoptive siblings.
diluc's father is an ex-harbinger (from fan theory alone).
pierro and dottore are perpetually (one eyebrow raised) at each other, and pierro doesn't fund everything he does.
the tsaritsa funded 60% of dottore's research when pierro did not agree to some of the research's handling. now it is 80% with agreement and help from pierro.
paimon is a whole person, but retains some ability to 'fly' though she would argue is more of a 'float', despite retaining complete ability to move in any direction. (she argues floating is the word because the process of 'flight' is too slow to be useful when not focusing on it.)
paimon's flight mechanic is concentration based. past a certain threshold, she must retain complete attention on it or fall from the air regardless of how high up she is. as such she does not like to go much higher than the akademiya's third floor railings around untrusted company.
andrii (stellafortunae) is the current/sixth descender.
his twin sister, laurain (constellainfinitum), is the previous/fifth.
lumine resumes primary control over the body when laurain is in teyvat, and often does not share the memories with laurain. it is unknown the intent behind this - however, it does not seem outright malicious, if it is at all.
zephyr (zodiac--muses) is the last known (willing) holder of the LUMEN vision, with the others being eerie (also known as caz) and erik (also known as echo).
andrii had the delusion forced onto him, but later reclaimed it as a proper vision with nascien and nahida's help processing his hate of dottore and fear of himself/what he's become.
mondstadt, liyue and inazuma had completely different storylines when the current descender had arrived. post inazuma, it resumed primarily being normal. sort of.
mondstadt is the most trusting of andrii and laurain, but refuses to let lumine in the city.
liyue will accept both of the twins, but they're both bound by contract to not interfere on affairs that they're not directly asked to help (or harm) in by someone of high authority.
inazuma is a case-by-case work-related based. others are allowed to come and go as they please, but will fight tooth and nail to resist against the twins should they show any signs of becoming the previous descender twins who ruined everything for them further.











