Tina's an alien who can actually fly, which means she operates by completely different rules than the earth-bound love interests in the main series. She's not competing on their field. She's got an unfair advantage, and the show knows it, using that gap between "human romance protocol" and "alien who can just show up whenever she wants" as the entire romantic premise. By the time you realize this OVA exists to let one character win without the constraints that defined the original series, you're already invested in whether she deserves to.

Tina is an alien who can fly, and she has set her sights on winning Tsuyoshi's heart. This single OVA episode of Kakyuusei, a romance with science fiction elements, was never released separately and came with the seventh VHS and DVD volume. It takes place in an alternate universe where Ai and Miko are not the main heroines, and it centers on Tina and several other characters who never appeared in the main series.