Leviathan/Dialogues

Three-star win

 * "Don't forget to thank me, okay?"
 * "Don't tell me?! I'm about to get a totally legit...high five!"

Two-star/One-star win

 * "HA! Can you see how strong I am now? I AM OTAKU! HEAR ME ROAR!"

Perfect Interaction

 * "Aaaww yeah, Levi got touched!"
 * "No! This is one of your normie tactics... IT'S A TRAP!"
 * "Heh...Hya ha ha! Hmm? NOTHING! IT'S NOTHING!"
 * "...How did you know what I like?. Can you do telepathy?!"
 * "Did you really think I'd like that?! Ah, no, I'm sorry! Don't stop!"
 * "H-Hey! Don't be mistaken if you think that makes me happy!"
 * "Why are you so touchy-feely? NO! I won't succumb to such normie tactics!"

Good Interaction

 * "Can I go already?"
 * "UUUGGH so annoyiiiing."
 * "Touchy-touchy, no no!"
 * "ROFLCOPTER"
 * "Hey! Who do you think you are, just touching me like that?!"

Bad Interaction

 * "Not sure my body can handle any more physical contact."
 * "Should I really be your fav bro? This isn't going anywhere."

After Perfect Interaction

 * "You're such a boss! Like, final-boss status. Ah, but not in a bad way! I mean...! GAH!"
 * "WOOOOOP! I may be a shut-in, but at least I wasn't shut down!"
 * "Hey, that was pretty fun!"
 * "Aaaah, that was awesome. It'd be even better if weeee... played games together, eh? *wink* *wink*"
 * "You had fun too, right? ... RIGHT?!"
 * "Listen up! It's not everyday I give out presents, all right?!"

After Good Interaction

 * "Peace ooouuut."

After Bad Interaction

 * "Yeah, I don't think this co-op thing is going so well."
 * "Yep. Staying locked in my room is always best."

Greeting

 * "I've been waiting for you to show up. There's this really good manga I thought I'd lend you!"
 * "Hm? It's you."
 * "Do you actually like m... You know what? Never mind."
 * "There's something about being up late. It's exciting, you know?"
 * "So, do you actually like hanging around me? How about we play some games?"
 * "I figured you'd show up about now. Since it's evening and all."

Player Returns

 * "Hey, you're back! You know I get lonely when you're not around..."
 * "Welcome back. ...It's not what it looks like. I wasn't waiting for you!"
 * "Finally, you're back! Took you long enough!"
 * "Ah, you're back."

Touched by Player

 * "Whoa...! D-Don't touch me!"
 * "H-Hey, quit it! I'm not used to people touching me, unless they're 2-dimensional!"
 * "What the...hey! You wanna fight? Is that it?"
 * "If you keep doing that, you're gonna... you're making me blush!"
 * "Hm, that was a new sensation to me. Do it one more time?"

Comment About Characters

 * "Man, if only I had Lucifer's power and influence..."
 * "I'm going to get the money I lent Mammon, and I need your help."
 * "Luke? He's that Chihuahua guy, right? Always looking like a frightened dog."
 * "Don't you think Belphie and I are a LITTLE too similar?"
 * "I know Lord Diavolo thinks I'm just some worthless otaku."
 * "Satan's appearance makes him seem like Mr Perfect."
 * "In manga, characters that eat all the time are funny, but with Beel, I don't find it funny at all..."
 * "I like Solomon! We totally bonded over TSL!"
 * "Simeon totally doesn't understand technology. What is he, an old man?"
 * "Asmo and I are brothers, so who decides that HE should get all the good parts of the gene pool?"
 * "Barbatos seems like he's always plotting and scheming. I don't like it..."

Game Tips

 * "There's something I really want at Akuzon. C'mon let's go."
 * "You can go to Contacts and power up your cards. Henry TOTALLY would!"
 * "You'd better be going to this event thing. I mean, you totally are, right? Right?!"
 * "Using Nightmare is likely to make thee more powerful..."
 * "Don't you think it's about time you worked on some tasks?"
 * "Majolish... Do you think they'd let someone like me in?"
 * "Hey, you've got something in Mail. You should go check it."
 * "How could you forget about To Do? What a waste."
 * "Why aren't you reading the new posts on Devilgram?"
 * "Hey, you've got an unread message. You know, it's not cool to ignore those!"

Idle Screen

 * *sigh* "So bored. Sooo booored..."
 * "What was so important that you had to be away for so long?"
 * "Eh? Are you ignoring me so I'll like you more?"
 * "Hey, give me some attention..."

Additional Dialogue

 * "If you've got enough money to buy lunch, spend it on fan merchandise instead, am I right?"
 * "Whoa. I spent the whole day watching anime... Scary..."
 * "Come on, hang around a little longer. You don't mind, right?"

Deleting an app

 * "Wh...? Why'd you delete that?!"
 * "No way..."
 * "Okay, I'll go cast Raise on that app for you. YOU'RE WELCOME."

Selecting him for the home screen

 * "Hm...me?"

Birthday Message

 * "You probably don't care, but today is my birthday."