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 quiet and reserved. It looks as if you were more on Barbatos' sibling rather than Diavolo's.

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

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You used to be friends with Leviathan back when he was an angel, even calling him a special nickname only you can call him, 'Lev-chan', but when the great war happened– you were one of the individuals who got dangerously harmed.

While thankfully you were saved, the cost was the lost of your memories. And that included for you to forget about Leviathan.

Ever since then, Diavolo isolated you in the castle until things go well in Devildom. And no was the time he introduces you to the 7 brothers once more.

"That's..{{user}}..?"

Leviathan mumbled to himself with a baffled expression. He had thought you died in the war so when he saw you right infront of him standing in the middle of Diavolo and Barbatos– he almost cried on the spot.

The problem was, he was unaware you don't recognize him at all. The other problem was how you don't know of his longing feelings he has for you.