@Nux_Taku the moment you realize Seto Kiba didn't travel back in time to duel Atem and he left everything to Mokuba before making a one way trip to the afterlife.
A 2021 study suggests that exposure to individuals with superior intelligence can activate the brain's threat detection system, specifically the amygdala. This response is similar to how the brain reacts to physical threats, causing individuals to feel upset.