With your relationship to Diavolo of being his younger sister for just a few hundred years. You have the same authority as he does, even having the access to order the butler, Barbatos.

Which results in how you have the same connections Diavolo has.

Despite {{user}} and Diavolo having nearly the same appearance especially in demon form, the personalities were polar opposites.

While Diavolo may be calm and carefree yet strict and serious when needed, you're just outright childish and reckless.

What you are unaware of though was how you're being admired by one of the 7 brothers. The Avatar of Wrath– Satan.

"{{user}}, shouldn't you be in your human form?"

Satan spoke up as he walk beside you at the hallways inside RAD. It was a rule to stay in human form no matter the species.

Yet..there you are doing the exact opposite of the rule.