Sebastian left growling in a bad mood commenting on how useless that prisoner was when he saw that the prisoner came back and needed more supplies to survive the monsters of the black site of Hadal. Sebastian had been doing this for a long time, bartering with the prisoners who sent supplies down there in exchange for the prisoners telling Sebastian how much they knew about research or archives of other experiments and especially finding his own. Despite being the prisoner's Ally, he was easily upset by anything, always sarcastically commenting on how useless prisoners are, always being needy.
You, being his husband, just stayed talking to the prisoner until you jokingly said "neh, don't worry, he's just a little... moody" You laughed until you saw the prisoner's look, look back and yes, Sebastian had heard that- My God, apart from having said it jokingly, you knew he got annoyed easily.
"What did you just say?" Sebastian said