Tetsu comes and asks the Sket-dan to meet with someone in his place. It seems like a sickly girl who he was exchanging messages with under a false persona wants to come see him...
As an aside, the boat 
rental fee is 400 yen...
La tarifa de los botes es de 400 yen...
El precio de las barcas es de 400 yen...
O lado ruim é que o
 aluguel do barco custa—