The two of them had their gazes interlocked for a couple of seconds. With no one budging an inch, the two of them didn't dare look anywhere else. Even though they could see some parts of each other's body in their peripheral vision, they still didn't risk averting their gaze. Besides, ninety percent of their bodies were covered by water, so they couldn't see each other's physiques.
It was an extreme case of Schrodinger's Cat. Was that his chest? His stomach? His legs? Both of their body parts seemed to be seeable and unseeable at the same time. Even Satoshi was having a hard time imagining clear images in his head.
Adding to that, the water in the tub was at the right temperature, making Satoshi revert to his sleepiness. The longer he stayed, the more his mental fortitude weakened. He wanted to get out of the bathtub and douse himself in cold water... but right now, he couldn't... or rather, he shouldn't get up.