I can imagine a scene where someone tries to deny the protagonist as the hero of the tribe and Roushk hearing how someone speaks ill of his hero begins to get irritated and angry while saying why the protagonist IS the hero of the tribe while yelling at him
you need to craft spectral sirup. you can learn how to craft heat occisia from othra, then return home make a spectral sirup.
recipes:
Berry Pulps (blue green red black yellow white): any berry with same color
Heat Ocissia: slot 1: angel leaf, slot 2: pulp red and slot 5 water lilly
Spectral Sirup : slot 1: pulp (blue), slot 2: heat occisia, slot 3: pulp (red), slot 4: heat occisia and slot 5: pulp (blue)
after you're done with the sirup, gave it to berny and wait for couple of days. i forgot how long.