Nephthys. [He parrots this back faithfully - he's clearly good at imitation, especially with her actively trying to help him - repeating it a few times so he can fix it in his head.] Chrome's easier, but people say that calling gods by their real names can be dangerous, byon.

[Which means Ken is actively concerned that he'd be putting her in danger if he called her Chrome. Ken never bothers with putting extra thought into things unless he thinks it's really important. In that way, he's similar to Chikusa, except that Chikusa avoids effort rather than brain activity.]

Do you know a guy named Chikusa? [He asks this in total innocence; she knows Axel, Chikusa is his fellow shinki, she might know him. That Chrome intimately knows who Chikusa is, or that she might find it weird to hear his actual name from Ken's mouth rather than 'Kakipii', are things he couldn't possibly know.]