Surprisingly calmly all things considering

"You look perplexed, Master. Does my appearance displease you? I can change it if you so wish?" Robin asks, her body swaying left and right above the lamp and her head tilted curiously to the left.

Chrom and Lissa both blush profusely while Frederick looks frozen in place. "Cover up, aren't you embarrassed?!" Lissa yells and covers her eyes with her hands but can't stop herself from peeking at Robin's new body between her fingers.

Chrom sheathes Falchion, confused as can be but feeling certain enough that there is no immediate danger to be had. "No! No Robin, that is not what I meant. Please. Cover yourself and explain what is going on. What happened to you, are you safe?"

Amused at her new Master's antics, but not wanting to embarrass him further, Robin answers "If you wish or order me to, I can wear **anything** you could ever want me to, Master. As for an explanation..." Chrom tries with all his immense willpower to maintain eye contact with his tactician-turned-genie and quickly gives her an order. "I order you to put your old outfit back on. And don't call me master."

Swirls of thin pink mist envelop Robin and her outfit changes back to the one she wore before she became a genie, which fits tighter on her now slightly curvier body but is still quite modest. "As you wish Milord. Now, for that explanation. The lamp whispered to me all the power it could give me and my master if I became a sex genie, how good it would feel to serve as a sex genie, I won't bore you with all the details but it convinced me. Now I am an immortal, all powerful magical being who lives to serve the every whim of my master. That's you, Lord Chrom. I can grant an unlimited amount of wishes as long as they are sexual in some way and unlike genies without a specific purpose I will not twist your wishes. I will attempt to grant them in the way closest to what you intend, and I can even advise you on how to use my powers. Worry not, I may be more submissive and sexual than before but I'm still fully me. As long as I have your permission I can keep serving as your tactician. Bu~t, I can not move my lamp and I can not move away from it without your permission. I'm quite lucky my master is one as trustworthy as you, Lord Chrom."

Chrom studies Robin's face and she seems genuine, but there is obviously powerful magic at play here. This is all a lot to take in and much to consider. His first thought was to ask his older sister for advice, but he already feels chills at the thought of the kind of look/scolding Emmeryn would give upon hearing of him owning a sex genie.