Alright, either this was a terrible translation or a straight terrible manga adaptation (I can forgive slight omissions and deviations, but if they not only put these ridiculous fanservice scenes but also changed a completely normal interaction, this is straight garbage much like what they did to Redo of Healer's manga).
This was not what was written in the first book at all lol
She just touches his neck and let her magic conversion thing flow through him and that's it.
No stupid bodyguard, no panty-shot, no sexual innuendo, nothing at all, even the way they first met is completely different.
My money is on another manga artist taking imbecilic liberties that don't represent the source material's tone in any way.