Door no Mukou ni wa Romance

When Kagami calls an escort service to a hotel one night, the guy who shows up at his door turns out to be precisely his type. But his elation at this stroke of luck soon vanishes as he realizes that Minato is, in fact, a food delivery boy who has come to his room by mistake. Unable to pass up this one-time chance, Kagami plants a kiss on Minato as a joke... But when Minato serendipitously shows up to deliver food to his house the next day, Kagami finds himself drawn more and more to this sweet and straightforward boy...
(Source: Core Magazine, translated)
Note: Includes an extra chapter.