NACR-478 Soaked in a Sudden Downpour, an Attractive Older Sister Can't Go Home, Karen Asahina

Karen, the neighbor he has always wanted, comes over to cook while his parents are away, then gets caught in heavy rain on her way home without an umbrella. She returns soaked, her white blouse see-through, and says she lost her key. He lets her in to dry off, and with the house empty, they end up together, the encounter finishing with a creampie. The film runs 121 minutes from 2021.