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[There's a sinking feeling in his stomach as she starts to explain and by the time she stops himself he has an almost sickening urge to find this Arashi-guy and kick some sense into him. Not because he's a rival or some shit like that but because you don't do this to women, especially not if you're lucky enough to be their boyfriend! That she's this upset when he isn't even here makes Sanji's blood boil - what kind of guy would make his girl believe that she can't have other male friends?!
He keeps his calm though, mostly, voice taking a turn for the tense as he prompts her to continue.]