Me and Hogator's Song

Roy is in low spirits after getting told by Lime he failed her practical application test, but takes Nemo's advice to do some Hyper Training before challenging her again. While training, he tries thinking of something he can use to win when he remembers Lime asking him why he and Hogator were singing. Why did Lime ask him that...? And will Roy and Hogator be able to win their rematch?!