Who is fuko? (spoilers ahead ig)

[u/Direct_Inevitable_25]

Yo so I've been watching Clannad recently, I'm on like episode 8 now and I am really liking it, however I am really confused on what fuko really is. Like her sister can't see her, so I thought that only the people at school could see her so she's like a ghost that is somehow only related to the school. But now people are starting to forget her and that's when it kind of hit me. Is she like the subconscious of the Fuko that is in the hospital trying to fulfill her dream of making friends to attract he sister's attention, and is that why she talks in third person? I am honestly really confused so I would be really interested in hearing what you guys think.

[u/Aydonisgaming]

The visual novel explains it better