There's nigh unlimited shit to say about 40k because it's been updating and adding to its lore in a weird patchwork since the 80s
And Touhou just doesn't really have anything like it, because it's entirely the brainchild of one guy
Touhou looks like anime but it honestly doesn't really feel like anime, if that makes any sense
it's a different evolutionary track
ZUN stopped watching anime in like 1992 and just vibed
When I played Marisa back in Empatheias
A character commented that she talked like a 30 year old man
and at first I was like "I'm a 30 year old man. Am I letting too much of my own voice through?"
kind of what she sounds like
there was a panel where someone tried to ask ZUN something about Marisa's moe points and he was like
"what? she doesn't have any"
Mokou and Kaguya are still around in the grim darkness of the 40th millenium
I highly doubt Reimu would be able to physically lift an astartes bolter
I don't know if Reimu could beat one either, but she could run circles around most daemons
Reimu has a very specific set of skills
most fights she either wins easily or loses badly based on matchup
the closer it is to an oni yelling about how much it loves eating people, the better her chances
Reimu: "I don't care how many black crusades you've done."
Reimu has Luigi parallels
Luigi responds to all threats of all terror levels with mild comic panic
Reimu responds to all threats of all terror levels like a three year old who's tracking mud across the floor she just finished cleaning
Anyway I think the reason I like talking about 40k a lot is that a lot of my plurk friends are coming from an entirely different idiom in terms of what is "cool"
There's a lot of JRPG and anime fans here
And I would never imply that 40k is inherently better than anything of that general genre
It is definitely different
And it's fun to discuss those differences!
The heart of crossover RP is characters from wildly different settings finding common ground!

- post human cyborgs
- created by an evil system but still do their best to help innocents
- often fight against their former allies
(Titus specifically. I would not say that most space marines "do their best to help innocents")
...thinking about it for more than 3 seconds I don't think you ever actually meet any civilians in Space Marine 1 or 2
from the point of view of a space marine a guardsman is practically a civilian
well I was gonna say that guardsmen might actually retire but idk if that's true
Theres a bit in SM1 where he’s talking to some guardsmen and they’re like “we can’t hold the orks off any longer. We’re at our fucking limit. Without reinforcements the planet is doomed.”
And Titus and his two buddies is just like “we’re the reinforcements.”
“You have done well to hold out this long.”
“We’ll take it from here.”