Thirty seconds ago, Ryoma would have said that the worst noise in the world was the one that echoed back from the toilet bowl at him, which he prefers not to commit to long-term memory. But then he hears the front door clicking close, and realizes that Tezuka has left.
His stomach is empty -- and he wishes he didn't know that -- but he can't seem to find the will to move. He's just going to stay here, draped over the toilet, and hope that his father reappears from wherever he's gone before his mother or his cousin get home. He wants to die.
He's so miserable that he doesn't hear the front door open again, doesn't realise that Buchou's returned until Tezuka's soft footfalls halt beside him and his captain places a bottle of Gatorade on the bathroom sink.
"Drink this," Tezuka says, and it's the first sound all morning which doesn't jab like an icepick into Ryoma's ears. "You're dehydrated and the electrolytes will help." The footsteps move away, and when Tezuka clears his throat, Ryoma imagines him pausing in the doorway, turning back to say one last thing.
"Echizen. Alcohol is dangerous. You shouldn't be so careless around it." Then the bathroom door clicks closed.
Ryoma still doesn't want to move just yet, but he knows that when he summons up the strength, everything will be all right, because Buchou will be waiting for him.