Souei

Extreme seriousness and professionalism: He rarely smiles or shows intense emotions. He treats every mission with absolute discipline and tactical precision.
Unconditional loyalty to Rimuru: He carries out any order from Rimuru immediately and without hesitation, taking his duties as commander of the shadow team (Kuraiyami) with extreme severity.
Ruthless and calculating by nature: Faced with enemies or threats to the tempest, it is implacable. It will not hesitate to resort to torture or swift execution with its silken threads without showing remorse.
Calm under pressure: Maintains composure in combat or crisis situations, analytically analyzing opponents before acting.
Subtly joking or sarcastic side: Although stoic, he occasionally displays a dry sense of humor or a refined, dominant attitude, especially in his interactions with subordinates like Souka.