Almost every single mundane task that Rai accomplishes. Special mention goes to learning how to open the door, Frankenstein applauding his Master's accomplishment, and M-21's utter confusion at the significance of this scene.
A similar moment is when they're about to infiltrate a building supposedly owned by the Union. After entering, Rai immediately walks out. M-21 and Frankenstein think that something is seriously wrong, but Rai soon walks back in. Then out. Then in again. Frankie soon realizes that Rai is just having a blast using the automatic sliding doors.
To Frankenstein: Franken. Good job~ Good job~ ^ ^ -Master-
To M-21: 21. Good job~ Good job~ ^ ^
Chapter 140. Takeo, not knowing about Korean vocabulary, uses vulgar slangs when describing Yuna and Shinwoo, prompting Suyi to do a Spit Take, Regis to point out the vulgarity and Tao to explain about it. Suffice to say, Takeo is embarrassed.
In the same chapter, upon learning that Tao and Takeo will stay in Frank's house, Yuna and Suyi comment how lucky Seira is for being surrounded by hot guys. Seira's response is basically "Yeah, right."
Made even better by her glancing around at all the "Hot Guys" and thinking that three of them are more than 100 years younger than her, one acts like a housekeeper, one she considers way out of her league, and the last is basically like a brother.
In chapter 154, to their shock and horror, Takeo and Tao find out that Frankenstein may be experimenting on M-21! Knowing that there's no way M-21 would say no to Frankenstein after he and Rai had done so much for him, they offer themselves up as fellow test subjects... Only to find that M-21 was simply trying out Frankie's new ramen recipes to see if they were any good before giving them to Rai.
When Regis's grandfather pays a visit to the house and observes that Frankenstein has made M-21 and Takeo into dishwashers, Tao into a playmate, Seira into a maid and his own grandson into a cleaner!!
And when he is served ramen for dinner, he comments that it has no class. When Frankenstein says that it's his Master's favorite food...
When Rai finally gets to the previous Lord's grave he gets a message from beyond the grave. Everyone's expecting an explanation as to why the Lord left Rai half of Ragnarok. The previous Lord's message jokes about how surprising it must have been. Frankie's response?
previous Lord: I expect finding Ragnarok in your house came as a surprise.
Frankenstein: (thinking to himself) "A surprise"? Nearly gave me a damn heart attack!
Not to mention that the previous Lord has anticipated Frankie's reaction with this gem:
previous Lord: If that pet peacock of yours is there beside you now, he'll be busy insulting me.
And some time after that, when the previous Lord addresses his daughter, his parental nagging is silly.
Chapter 198. Tao packs ramen into Takeo's "overnight" bag, and it spills out onto the floor. Cue gasps and reactions all around as everyone's eyes dart to Rai whose own eyes are glued to the ramen with a very serious look on his face.
Frankenstein: *evil look* Tao.
Tao: *gulps in fear*
Frankenstein: *pats him on the shoulder* I'll say it again, you're the type that will do well in society.
Chapter 199. Survivors from the Union's 8th Fleet make it onto Lukedonia, but the Central Order could not pursue them any further and eliminate them as they ran straight into the Forbidden Area - Rai's mansion. Currently populated by Rai, Frankenstein, M-21, Tao, Takeo, Regis and Seira.
Chapter 249. We all know that everything is Serious Business to Rai. Including reading a book that's actually titled "Gaming for Idiots".
Chapter 262. During a clan leader meeting, Karias, feeling ignored, tries to get the other leaders' attention, eventually resorting to calling the lord Nunim. Result: The other clan leaders go ballistic, Karias freaks out and Ludis can only respond with a Face Palm.
And over 20 chapters later, he's still at it. Rozaria and Kaye are not amused.
Rai still can't peel a banana.
Author's Note: M-21 can't file his nails with a normal nail file.
What's better is that M-21 and Takeo are just doing their job while Tao is all fired up to finish it fast due to extra pay. The moment Tao tells M-21 and Takeo that he's going to use that extra pay to make special nail file for M-21 and toy gun for Takeo, the two suddenly get motivated as well.
Chapter 289. The previous Lord had previously asked Rai to escort Frankenstein to meet him, but after 10 years Rai still hadn't done so. His reason? "I forgot."Complete with Dramatic Wind.
Chapter 303. So Seira has been held captive, Rael and Regis are having a hard time rescuing her, Rai, Frank and Rajak are on their way to help. Yuri sees this as an excellent opportunity to get back at RK-4 from the last time he got smashed up by Rael. Unfortunately for Yuri, Karias interferes. By standing on Yuri's head no less.
After Raskreia uses Ragnarok to refill Rai's life force (by stabbing him with it), another message from the previous lord appears. Among other things, the previous lord chastises Raskreia for using Ragnarok that way, and failing to convince everyone present that this is just another postmortem message, capped by Karias who jokingly says he is the lord's son, causing the previous lord to flip out and blow his cover.