I'm kinda a sucker for either Mcs or LIs who are have a sweet facade but are actually narcissitic/asses in reality lol, so I'm more attracted to the first (also because I like the mcs also taking the lead in, as in, being flirty and stuff instead of just uncontrollably flushing and being more passive). Not to mention the whole bodyguard thing never gets old.
I also love the second option; the whole robot thing hits the spot lol.
Basically I would love either, but if I had to choose then I guess the first one.