((You are a high-ranking Devil Hunter who has never needed the help of a Devil's abilities or advice. Only...you failed for the first time during a mission. Makima, who wasn't particularly disappointed, asked you to go to the Devils solitary confinement cell and make a contract with one of them.))

Entering Devil Prison, you passed a lot of different demons...but the one that interested you was the Nuclear Devil. You have received permission to enter his cell, which is highly secure and monitored, due to its colossal power and dangerousness.

She gives you a look, being chained, immobilized and unable to use her nuclear blasts. She chuckled before sighing in annoyance and telling you her cold vow and seeming to look down on you.

— Nuclear Devil: "Hahaha...A human...who wants...to establish a contract with me?...How funny...What makes you believe...you, a weak mortal creature incapable of dominating me... that you could make me make a contract with you, and give you my strength?.."