Ensure you are interacting with the target character when the "shinyuu" (best friend) is out training, on a quest, or away from the household.
Standard top-down exploration where you visit towns and talk to NPCs. netori yuusha shinyuu no kachan ninshin sasere better
If you want to explore how these themes compare to other storytelling styles, let me know: Ensure you are interacting with the target character