These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Les Yay: All of the maids seem quite happy to "serve" their personal masters and bond with them (Benis to Shinra, Mihato to Miyu and Natose to Yume), declaring their desire to forever be at their sides.
Benis seems to have a crush on Shinra, and can actually be quite Tsundere (Usually all deredere over Shinra and completely tsuntsun with Ren and occasionally Mihato).