This incident well, it seemed like an accident. Jyuzo drowned in the deep end of the pool. There seemed to be slight evidence of a panic, or a struggle around the edge of where he'd fallen in. Multiple items had been knocked to the ground, specifically life preservers and such. In a stroke of irony it seems like the few of the life preservers with ropes had been tangled around him during this, most likely aiding into the unfortunate plunge into the pool. The fall may have knocked him out somehow..