Ranji is not at all eager for a second fight. Why does he go back to the pool, then?

Ranji was not eager for a second fight, but he still went back to the pool because if he had not turned up, it would have been an acknowledgement of his defeat. He could not quietly accept his defeat. If he surrendered, he would be beaten forever. However, if he fought and got beaten, he could come again to fight and be beaten again. As long as he fought, he had the right to the pool in the forest.