Tomoko’s role in Hajimete no Hitozuma 6 is the central heroine and the primary victim of the episode's blackmail storyline.

Her character serves as the classic "sacrificial mother" archetype. Her role in the plot revolves around a few key elements:

• The Protective Figure: She is introduced as a loving, concerned mother who wants to stop the physical abuse her son, Masanobu, is enduring at the hands of a local bully.

• The Victim of Extortion: When she confronts the bully to demand he leave her son alone, the bully turns the tables on her. He leverages her desperation, offering to stop the violence only if she submits to his demands.

• The Catalyst for the NTR Plot: Her decision to secretly accept this degrading arrangement to protect her son drives the entire narrative. She becomes trapped in an escalating cycle of exploitation, forced to hide her double life from her family while enduring the bully's abuse.

Ultimately, her role is to be the tragic center of a dark netorare (NTR) story, where her maternal devotion is used as a weapon against her.