So I'm a Spider, So What? - Kumo Desu ga, Nani ka?

[David75]

D said she was in the classroom... and Kumoko has been traped thinking she was another student, we've had that idea too... but a spider too ! And Kumoko does not seem to even remember her past name.
Is it possible that for a reason Kumoko is partly D and that tiny spider in the room was used by D to escape certain death but she had to sacrifice some parts of her transfered to Kumoko ?
So Kumoko is coming partly from that spider and another part from D ?

[Kraco]

D said she was in the classroom... and Kumoko has been traped thinking she was another student, we've had that idea too... but a spider too ! And Kumoko does not seem to even remember her past name.
Is it possible that for a reason Kumoko is partly D and that tiny spider in the room was used by D to escape certain death but she had to sacrifice some parts of her transfered to Kumoko ?
So Kumoko is coming partly from that spider and another part from D ?

Haven't we seen pre-spider Kumoko's memories of some random stuff? I think someone mentioned it before, as well. A spider wouldn't really have that fancy memories, with its primitive brain. There surely wasn't a dragon lurking in the classroom, to create Fei with the fusion with another student. I'd say showing the spider in the classroom was nothing but an artistic decision to foreshadow Kumoko's fate.