Diavolo/Dialogues

During Battle

 * "I'm only getting started."
 * "Okay, let's go."
 * "I’m not finished yet!"
 * "It’s my turn now!"
 * "I should join you."

Three-star win

 * "Sometimes you need to get up and move instead of doing desk work all day."
 * "Is this one of those things where you high-five after winning?"

Heart Reactions

 * "I grant you this freedom to do as you please only for now."
 * "I must thank you for showing me such a  good time."
 * "You're not afraid of anything, are you? That's what makes you so intriguing."
 * "The feel of another's touch is refreshing. I feel splendid."
 * "Now then, how shall you please me next?"
 * "You wouldn't mind if I touched you, would you?"
 * "I must thank you for showing me such a good tie."
 * "Very good. Just as I expected."
 * "How truly amusing."

Sparkle Reactions

 * "If something's bothering you, shall I lend you an ear?"
 * "Human communication is a mysterious thing."

Sweat Reactions

 * "I thought I would have more fun. I guess I expected too much"
 * "I can't read you at all."
 * "This wasn't a very meaningful use of my time, now was it?"
 * "Do you want to see me when I'm angry?"

Perfect Sequence

 * The more I know about you, the more drawn to you I feel. Nothing can captivate me as you do.

Good Sequence

 * "It seems like you had fun too."

Bad Sequence

 * "It appears I may need to change my assessment of you."

Heart Reactions

 * "I had been wanting this. Thank you."

Whip of Love

 * Hahaha, you're full of surprises! But that's what I love about you.

Greeting

 * "I'm glad we could meet once again."
 * "Is it al right for you to be up this late?"

Player Returns

 * "Welcome back. Get anything done today?"

Touched by Player

 * "What's wrong? Did you come to see me?"

Comment About Characters

 * "Lucifer is my right-hand demon and most trusted friend."
 * "Seems like Mammon caused trouble again."
 * "Conversations with Leviathan are always so complex. I can't keeep up with him."
 * "What can we do to make Lucifer and Satan get along?"
 * "Asmodeus is always partying but never invites me..."
 * "Beelzebub once ate a pillar in the Demon Lord's Castle."
 * "I would like to have a heart-to-heart with Belphegor sometime."
 * "Solomon is an interesting one. Much like yourself."
 * "Simeon is the one person in this world i don't want to anger."
 * "Luke is such a ray of light."
 * "Barbatos is truly a great demon."

Game Tips

 * "How are you progressing with your lessons?"
 * "If you want a better way of getting through lessons, unlock more spaces in Devil's Tree."
 * "Here's a present for you in To Do."
 * "This morning's fortune told me you'd have luck in Nightmare today."
 * "Will you help me shop on Akuzon?"
 * "Sometimes it's nice to change up things in Majolish."
 * "There's a new event isn't there? Let's check it out together!"

Idle Screen

 * "...You must be busy, huh?"
 * "Hey, want to chat?"

Additional Dialogue

 * "Don't tell Barbatos that I'm here, okay?"
 * "I hear mornings in the human world are bright and beautiful."
 * "You don't need a break? If you can't sleep, I'll keep you company."

Deleting an app

 * "You deleted it?!"
 * "Lucifer's going to get mad..."
 * " I'll reinstall it... Don't tell Lucifer."

Selecting him for the home screen

 * "Me?"

On Player's Birthday

 * "Happy Birthday! I am happy we can all celebrate your birthday together."