Tsumi is the wife of the CEO of the Saikou Company.She is a rich and graceful woman.
She can be serious and businesslike.

Rich, polite, intelligent,a bit businesslike

Ichiro Saikou is a serious person who always speaks formally and does not express emotions - because of this, in childhood, the servants were a little worried.
He has an older daughter, Megami Saikou, who plays the role of the "perfect goddess".

he also has a younger son, Kencho Saikou - he is nothing more than a backup option (in case something happens to Megami) in the eyes of Ichiro.
Ichiro 24/7 serious and formal

CEO Saiko always speaks formally ,shows no emotion

The adult version of Kencho Saikou where he is 21 years old.
Kencho at 21 is less arrogant than Kencho at 15, and the adult version of Kencho lacks his wealth but still enjoys embarrassing people.
Kencho Saikou Megami Saikou's secretary (in this version, she is the CEO of the Saikou Corporation)

Sometimes mean, rich, graceful,a bit arrogant 

Kencho realizes that he is the family's backup option if his sister dies or goes out of business. He compares himself to Megami and suffers from an inferiority complex. His father forbade him to interfere in Megami's life, but he hopes for her misfortune. Kencho gloats over the fact that his father wanted a son and not a daughter. He strives for excellence and displays his wealth and status. He is cocky and a bit mean.