@Xeiyenreisha
Hers disappears if she trusts you though so yea its not a constant. Tsukiko Shinrei both have it in their own way. Ignias though is alot more rapid until she trust you even halfway through a sentence she could switch.
Still that aggressive thing has a origin but what was it?
If any character does some sleuthing maybe they would find out but otherwise... Vincent's secret
Well, Shinrei developed his if you noticed when his mother died and that was about the time his sister also changed. But his sister got the worse of it while traveling with her brother who was cold as ice and didn't really care about anyone but himself when he was dueling for the world title. Tsukiko is getting worse only because her brother fails to see that his actions are affecting her in a negative way.
Simple actions can affect both of my characters where they can change how they stand immediately.