Kampo at Lakeside Stable wants you to get rid of the giant monsters in the caves around Floria Falls.
Quest Location
You can start this quest by talking to Kampo at Lakeside Stable in southeast Hyrule.
The Youngest Hinox Brother
The Youngest Hinox Brother is a Hinox that can be found in Rodai Lakefront Tunnel. The entrance is at the northeast edge of Rodai Lake, which is northeast of Floria Falls at Lake Floria.
The Middle Hinox Brother
The Middle Hinox Brother is a Blue Hinox that can be found in Corta Lake Cave. The entrance is at the northern edge of Corta Lake, which is northwest of Floria Falls at Lake Floria.
The Eldest Hinox Brother
The Eldest Hinox Brother is a Black Hinox that can be found in Calora Lake Cave. The entrance is north of Calora Lake, which is northeast of Floria Bridge at Lake Floria.
Quest Reward
Kampo gives you Mighty Fried Bananas.