Concent (2002)

In her brother's apartment where he died, Yuki finds a vacuum cleaner with its cord still hooked up to the outlet. She discovers that the circumstances surrounding her brother's supposed suicide are sketchy at best, yet no one has any answers. When she starts having hallucinations involving his ghost, however, she seeks some psychological help, eventually uncovering some things that she may have wished she'd left covered.

Unfortunately the movie Concent is not yet available on HBO Max.