Mateo regards his sister suspiciously, as if even though she is still a baby, even though both of his parents have reassured him she will be kept away from him, she's still going to take a flying leap and gnaw on his skull. It's a fair concern, Luna is a biter.

He wriggles his little butt in the water like he's hyping himself up, but Jyn's note on his bravery seems to get him over the fear of his sister striking. "Mama, I want you to counts how long!"

He barely waits for her reply before he puffs in a deep breath and ducks back under the water. Cassian looks up at his future wife with a very fond smile while his son's little fingers clutch at his hand for dear life, and he is ridiculously happy. "I suppose if she falls asleep, Mateo can finish his octopus in peace."