Roland can only react as naturally as it comes. He sighs so deeply, he feels it in his bones. His fingers begin to massage the bridge of his nose in an attempt to lessen the tension crawling up to his temples, whether from the lack of sleep or the restlessness of his never-ending thoughts. He hasn't been the same since that day, and hearing about Senku's broken SCA seemed to bring it all back up to the dirty surface.

But he is worried first and foremost. Even if his actions don't seem to reflect such a feeling, not right now. Roland lets Tidus ask the questions, because for Roland it won't really matter. Senku experiments so often, maybe he just broke it like that? He stays silent, but there's a flurry of movement by his corner, blocking the exit of the train. It's revealed soon; he removes his own SCA, wrist free from the device, and offers it with an extended hand to Senku, not quite bridging the distance. Learning from that mistake.

Though he's charged, almost frantic in nature. Unlike him, not the same man, no not since -

"Take mine, then." Roland says quickly, a shake of the SCA twice for emphasis. "Wear it. Just don't go out of this train without the watch." If Senku pauses, if there is room for hesitation, Roland's expression falls even deeper. "Please."