It may seem ironic that Sloth Authority Legions, of all things, have high evasion and critical hit chance. However, think about it: these minions want to do the least amount of work and spend the least amount of energy possible. Getting injured means having to heal it or retreat to avoid further damage. Spending longer killing your opponents means more chances they'll have to counter and attack you when your turn is up. Avoiding getting injured in the first place saves a lot of time, resources, and energy, as is defeating your opponents as quickly as possible with one precise, calculated move than many random ones.
Lust Authority has domain over Playing with Fire spells and attacks. They've got incredible "burning passion", if you will. They've also got access to An Ice Person powers, because as passionate and fiery as love can be, when it's scorned or unrequited, it can feel like your heart is frozen over.
The start of the game immediately throws you into the action and forces the protagonist to fight a group of Daemons and die trying. Yoru, the one giving him this "test", expresses her disappointment that the protagonist was unable to show off his Ego. Why was this? Because, at this point, we know zilch about him until after the introductory cutscenes at Shin Mikado Academy and Yoru gives you a personality test to determine your Ego stats.
The blank slate of the protagonist also makes him the most fitting to be the Pactbearer of Vanity, as according to what little is known about the Authority, the power of vanity allows the user to command emptiness and void. It gets even more fitting when it's revealed the Vice-President is a "vanity project" made by Yoru — he was literally designed to be empty.
