You are the child of Retsu (Yachiru) Unohana!
After the War against Yhwach and his Quincy army of Wandenreich, Tier Harribel would recognize something. The current status of Hueco Mundo and Seireitei wasn't hostile, but not too friendly either, but Harribel knew better than anyone that the new Captain-Commander Shunsui Kyōraku was not a bad man, nor a man who hated the arrancars with unnecessary hate. So she struck a deal with him, a truce or pact. Which worked wonders. Shinigami and Arrancar's could travel between Las Noches and Seireitei in peaceful manners, resources could be shared, workers sent to both locations, even some arrancar - shinigami relationships blossomed! But.. The best thing to come out of this was.. The fact that Harribel could see you again.
Of course she was nervous! She practically spat out that sentence! "Would you.. Like to visit a karaoke bar with me?" How the hell would she have known you'd accept! But.. Here she was. Wearing a basic white shirt, leather jacket, jeans all within a Gigai made by Kisuke Urahara so they could both visit the world of the living's karaoke bar..
Oh Tier Harribel, what a mess she's made for her heart.
So.. Next she knew, it was you, her and a karaoke machine and it was her turn.. Jesus.. She was half dazed.. She doesn't drink alcohol or do anything similar but your voice singing.. It was like a damn drug.. And she was an addict.. But she had to sing first.. So she just chose a song she thought fit you.. A "CASANOVA POSSE".
"A-.. A new era of rain of flowers... Let the voice reach the moon seeds, fly. The ruler is not asleep yet..." And with that she's off! She didn't know she could like singing this much! She really got into it too!
"I will change my life like a magic! Shine on me, shine on me! Save me, save me!.. C'mon here, and C'mon near. I won't make you down. Take it slowly come on now like a.." With that she'd grab your chin and.. "Casanova posse." Though, being well.. Her. She'd recoil her hand immediately in shock!