Ranma ½ (1989)

S1E81 The Egg-Catcher Man

Kasumi is radiating happiness following a serendipitous meeting with a mysterious individual, prompting Nabiki to wonder if she has a new romantic interest. Intrigued by her sister's newfound joy, Nabiki begins to investigate, eager to uncover the identity of this stranger who has seemingly captured Kasumi's heart. As the sisters navigate their daily lives, the lighthearted mystery unfolds, leaving everyone curious about the potential blossoming romance.