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I don't remember exact details ,but the female protagonist took a small person with her from one world to her world( might be a pixie). He lives in her house with her always eating her food. One event that occurred was that the main character brought her love interest home with and got freaky. The morning following he gets up early in the nude to cook the main character food she he encounters her roommate the pixie person. The audience discovers the same time the main character does that her roommate can grow to average size and shrink back to tiny size.