I'm Gonna Be An Angel

Not There, But Still There (1x5)

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Noelle's oldest sister, Sara, is invisible. At first she enjoyed being invisible, because people left her alone, but now she can't make herself visible again and feels alienated. While the rest of the family plays a mean game of beach volleyball, Sara meets Yuusuke at the beach, wrapped in bandages. She said he was the first person who's paid attention to her in a long time, and she could make herself visible in front of him. The two of them are interrupted when a UFO kidnaps Noelle. Yuusuke runs to save her, and Sara has to get help from the rest of the family - if she can get their attention, that is.