Who can explain to me in detail, what is the support of the fire, light and shadow hero?

The support effect is that standing within a certain range has a bonus effect? As shown in the picture? The effect of Roddy and the protagonist standing with others in team 7 was improved when Roddy was fighting and killing? And the enemy's hit dropped by 40 (originally 100), and the killing completely disappeared?

As long as you get a good impression (number of attacks)

When the recipient is in the supporter's box 3, there will be a support effect.

I have to mention? The protagonist supports everyone in one direction? Others have different support relationships according to their relationships.