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https://twitter.com/_nctl/status/1641649587424485376?s=20
After Asakura's death, Higuchi, who lives with Asakura's tulpa, wants to see her. When she said something that was too convenient for herself, she wants to feel a mixture of happiness and despair, thinking that "This is not the real thing after all".
Tulpa is a concept in Theosophy, mysticism, and the paranormal, of an object or being that is created through spiritual or mental powers. Modern practitioners, who call themselves "tulpamancers", use the term to refer to a type of willed imaginary friend which practitioners consider to be sentient and relatively independent.