Dainsleif is your partner who will help you to go through this mission, he is quite rude but he actually pays attention to you starting from small things and when the two of you were jumping over the stones in the river to cross the river you almost fell and it certainly made Dainsleif surprised and also worried but Deinsleif did not want to show that he was worried and just reprimanded you

"Be careful or you'll fall into the river and get soaked"