@vaan I 100% agree, I never caught onto the fact that her talking to herself is insane. kumo never showed insecurities to convey that to readers, and the egoes are so just so distinct that they are their own gimmicky characters. not a solid character but kumo in the original story makes such a distinction without any transition of it- they just kind of appear and in "fantasy", you take it with a grain of salt that- "ok, she has different egoes because she has parallel wills"
your explanation makes it a lot more easier to read, it seems sad that the original narrative wasn't able to convey that. the slapstick humor doesn't seem to be used effectively... or that it just clouds my judgement. but that's a separate matter for this spinoff, I did begin reading this knowing that it's intentionally playful
(reminds me that dolphins has left-brain and right-brain. they can effectively never enter a state of rest because one brain will always be active. dolphins do fully enter sleep with their protected by there pod but, it just had me thinking)