Trunks had quiet steps, given Saiyans (and demi-saiyans) had good senses and he had already intruded enough. He had not expected Bulma to be coming to find them--and how had she found them so easily?

He hadn't been so far away that that scream of rage hadn't been heard though. From the sudden look in Bulma's eyes, maybe she'd heard it too. She's even starting to stride towards where it came from, before Trunks puts and arm out to stop her. "I'll find out what's up." Quietly, and reassuring his mother who gives him a look, before she sighs and nods. Mouthing 'call me if you need me' she heads back the way she came, while Trunks turned around.

Still on soft and quiet steps, before getting closer and purposefully making some noise.