Whose System Are You, Anyway?

(Premise in progress, title and blurb to be improved)

Because the Space-Time Administration is short on systems, the protagonist has to serve as a System for multiple Hosts. He adheres to the professional guidelines for systems: don't get too close to the Host, don't say anything unnecessary to the Host, and don't fall in love with the Host. He always communicates with his Hosts in his cool, mechanical voice. His Hosts all have different personalities, but at some point, they all become a lot less clever, and he has to go into their worlds himself to help them complete their missions. Sometimes he has to help by playing roles like a wife, a madam, or a lover. As a System, he sticks to the rules without wavering, until his mouth has been kissed swollen several times. That's when he realizes there's no need for one System to work so many jobs. He tries to contact the Space-Time Administration, only to discover that his Hosts have already kept him in their worlds, leaving him unable to contact his employer...

The only thing the System finds difficult is this: Oh my goodness, from now on, he'll have to kiss so many mouths...

Looking at the Hosts surrounding him, the System's vision went dark.

One Host: “It's not just about kissing all those mouths, you know.” (laughs)

Theme: To be added.