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NAME_1 shifted in her seat. "So we have to be careful not to hurt each other?"
"Precisely!" NAME_2 affirmed, her eyes locking onto NAME_1's. "You need to communicate clearly with each other and make sure that everything you want to do is safe and consensual."
NAME_3 and NAME_1 exchanged glances again, their hearts pounding with anticipation. They were both eager to try new things but still felt apprehensive about breaking new boundaries. NAME_2 leaned back in her chair, her eyes glinting  as she observed her siblings' reactions, trying to gauge whether she should continue or not.
"So..." NAME_2 began carefully, choosing her words. "Let's start with something simple –a basic introduction to bondage." 
NAME_3 and NAME_1's eyes widened with anticipation. "Bondage?" NAME_3 repeated. He knew the word, but did not expect to hear it from his own sister.
NAME_2 nodded, her gaze steady. "Yes. Bondage can be a very erotic and powerful way to explore dominance and submission."