While the specific "Vaddu Tammudu" series is part of a more explicit subgenre, Telugu literature has a rich tradition of romantic fiction that explores similar themes of family and devotion with varying degrees of maturity.
"Vaddu, Karthik... please," she whispered, her voice cracking with raw emotion as she reached out, lightly catching his sleeve. "Don't leave me alone in this darkness." Chapter 3: Acceptance
It was Arjun. "Vaddu" was his favorite way to start a sentence—a mix of a refusal to take 'no' for an answer and a playful command. Vaddu Meera, don't say you're busy. Vaddu Meera, don't ignore me.