Backgrounds can be daunting. At least the Kiseki app doesn't require very detailed background sections? Ahaha, Sebastian won't protest. Being sought after and fawned over while ~providing a service~? He was practically born to be hosted.
Pfft, I like this plan. "Gracious, um. Okay, I can fix this. ...How does one take care of a drugged human who's not a disposable lowlife?" Tanaka shakes his head in disappointment across the dimensions.
If Sebastian, after joining the room service, comes across Levi cleaning I can see him going "you want to clean? then come do it in a structured efficient manner with me and the bots, chop chop". I don't know if Levi would go ahead with that or not, but either way they'll definitely run into each other, either while cleaning or gathering herbs. #1 customer it is.