Is this love at first sight a bug? A sci-fi romantic comedy about a humanoid machine and a human girl! In this world, humanoids are widely used for various purposes, such as housework, work, and conversation partners. However, due to certain circumstances, Komiyama-san doesn't have a humanoid, and a humanoid named Tani-kun is delivered to her home. As soon as Tani-kun makes eye contact with Komiyama-san, he falls in love at first sight and proposes marriage...!? Life under the same roof with a humanoid in love begins now!