I don't know man, it looks NTR. The are talking with the person we see the scene from, that didn't see the starting sign like the girl having the ring or hair and cum later, after they had a quickie around a corner. the text baloons come from 3 sources, admiral, girl and then someone else.
@Vooxoo the "someone else" is another ship girl. There's literally only one man and his one dick in the entire story. Yes, this is (probably the only one from this author) non-NTR.