A bottom detective is solving the case of a killer and needs to ask the prince for help from the higher ranks of guards. Top agrees as long as bottom stays as his toy at first. Side character obsessed with bottom, is the killer. Bottom gets pregnant with top's child but doesn't know that it is the top.
Very good storyline. Interesting and fleshed out, although the mpreg mechanic is a bit weird.
Poor English. Badly translated.
Very good art style. Charming. The characters are hot.
Who's Your Daddy?