Hello Mar! :3

It’s funny, for another thing, I’ve also thought of the logistics of Dante having a library Blade could go to (either in his palace/villa or in Solaria).
Dante could make an exception and allow him to borrow books despite not being a citizen, just so he can carry piles of books back to his room or Dante’s guest lounge without bothering the other patrons in the library. The fact that Blade is much happier when they can read together is just a coincidence 😌.

That’s a really cute backstory you wrote for them. It’s very in character for Blade too 🥰
I’m picturing them in Dante’s lounge after a long day of work. Dante was just trying to smoke and relax with a book of his own when Blade walks in with a big pile of books and many, many questions.

For sports, considering how horny the entire Kleinster kingdom is… it has to be something homoerotic with a lot of emphasis on the male form… like a Klein version of Turkish oil wrestling maybe? 👀 That would be hard to understand just from reading about it too. Dante could talk of the unique bond formed between training warriors while Blade thinks about how shiny people would be. So cute! And the slippery part sounds fun! The mission-oriented side of Blade would think about how much harder it would be to capture an oiled up target… but he doesn’t have to think about that anymore. He'd love to try it out once with darling and his friends!

In a book about Fire Territory traditions, Blade could ask him about a drawing of baskets of fruit under a stylized sun. What does it mean?
I remember Dante mentioning his parents would make offerings to the Sun in his first birthday letter. It could be on a special day held yearly as a harvest holiday, to thank the Sun for looking out for them/the crops. Blade already has an understanding of what the God of Klein is (and seems to believe in him) so I think he could get on board with the concept. Dante would mention he still thinks it’s not a good use of resources but he understands how meaningful traditions are for some people. That makes things more confusing for Blade though. So it’s real but it’s not real? Won't the Sun get sad if no one thanks it? 🥺 Blade could totally thank the Sun himself the next day, by bringing a little something at an altar, waving at the sky, saying thank you for taking care of Lord Jackass and Solaria :')

Next, I can see Blade asking about an elaborate costume he sees a child wear in a book. In the drawing it’s so big, it’s swallowing the kid up. Dante could explain those clothes are traditional wear for a Solarian coming of age ceremony. They could be either individual ceremonies held on the child’s birthday or a single ceremony held for all the children reaching adulthood that year.

In Solaria, the age of majority is only 15. The wording (from Dante’s SR) is a little vague but that’s the gist of it. Since that’s so young, an event to mark that and make it official could be beneficial and help the kids understand how serious this is. They could also be given a blade for the occasion (a bit like Dante’s dagger gift, but it’s also a practical item).
Blade would be surprised since according to his other readings, small humans haven’t reached their peak condition yet at 15, their brains are still so undeveloped…
That could stir up some bad memories for Dante but I could see him agreeing to show Blade his own old outfit, more elaborate than most people’s due to his status. One of the last meaningful memories he has of his parents… (I hc that he was around 15 when the riot happened, since the game dropped the number 15 and Dante took over directly after coming back from getting his markings, without someone else in charge until he came of age or anything.)

On the lighter side, Blade would love to learn about Solarian/Fire Territory dances and songs 🥰 Dante would’ve learned them from his parents, tutors and observation but since he grew up very sheltered, he's rarely had anyone to share this part of his culture with… until now! Dante is a quick study, I'm sure he'd be good too. At first Dante would be reluctant to show him but watching Blade get it wrong would compel Dante to correct him. The Sun Lord wouldn’t directly admit to Blade that he had fun but that night but… he can think of worse ways to spend an evening 🤭

And there you go. This got a bit long again but I hope you enjoyed my ideas! Don’t hesitate if there is anything else, I love thinking about those things. And thank you for asking!