Starman~Kono Hoshi No Koi

The Fated Man... Forgive Me, Mother is a Woman Too (1x1)

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Uno Sawako lives a quiet life out in the countryside with her three sons and mother. Seems her husband has run off on her, but Sawako's determined to keep moving forward with a smile. One day she nearly runs into a handsome young man standing in the middle of the road, where he promptly collapses. Taking him home and finding out he has amnesia, Sawako determines to take advantage of that and turn him into her new husband, whom she names "Hoshio" or "Starman." Things seem to be starting off well, but there's something not quite right about the mysterious Hoshio…