Sofia is sufficiently distracted by the whale, and Cassian would be too if his gaze didn't rise up to meet hers. She looks awkward and unsure and he wants that to go away.

He smiles at her, a little shyly. She got a whale tattoo, because of Sofia. All her tattoos connect to her family, it's not hard to make that connection. One year ago he was alone in a tiny apartment with an infant, and now he is living with Jyn in a unit that has a real sense of... permanence. She literally got a representation of that inked onto her body, in a much more visible place than the others.

"It does," he tries. "She clearly loves it."

But it's not entirely about Sofia, so he leans in and kisses her cheek. His smile widens. "I like it too."