Maybe Cray and Vesti sitting around a Campfire as Vesti tries to poke Cray about his past?

Or Cray is sitting on the ground holding his shoulder with the curse as Vesti looks at him worried that he got hurt only for Cray to turn her away or yelling to stay away?

Cray leading and annoyed Valesti (fox form) around on a leash?

She would kick his arse lmao. Because she can turn into an animal doesn't mean people should treat her like a pet.

Sorry.

would be a good form of undercover though, play the form of a rouge warrior and his pet fox to fool some guards or something.

How about Valesti wrapping a wound of hers after an assassination went poorly?

Maybe Cray reminiscing his days before he became the master at alchemy - for example mixing up wrong formula and having to clean the whole lab from resulting weird ooze (or just a classic explosion-burned-eyebrows-aargh play ;) )?

Or something that would showcase how Valesti relaxes in spare time? I'd assume she's not legendary assassin mage literally all the time - does she like for example to read? Or maybe she has a different hobby, like, I don't know, collecting seashells? (would she be embarassed if someone found her stash?)

Stargazing on a snowy hill. Perspective is us looking up qt them as they look to the sky or from the sky to them with stars reflecting off the snow/eyes.

If I am reading right and onlyCray is deathless, something related to
Sorry if it is out of character XD
C: Wait we are meant to be sparing, why is your sword sharp
V: Sharp swords act differently in the bind, it's important to learn the difference
C: But you gave me a blunt one
V: Well yeah duh, I can die, that would not be safe
C: Oh...Hold up, are you gonna actually stab me?
V: If your scared of getting hit then it's more like a real fight, honestly I'm dong you a favour

it doesn't quite work like that lol he can still be injured/hurt. It's not like he doesn't feel pain and while he can't die, if he's 'killed' he doesn't just instantly come back, it takes a bit of time

Ahh fair fair XD I guesed it would be a little more complex

Though memeing aside you could go for some training scene, working from their own versions of Fiore de Libre or Meyer.
Though it would be more of a comic style i guess to actually get them across.
Or just the 'End Them Rightly' meme lol