Seiryaku Kekkon wa Otakoi no Hajimari

A sweet rom-com between the cool-headed, elite son of a noble (an otaku) and the gifted and talented daughter of a business conglomerate (also an otaku)! Tsuyuri's husband Koichi has declared that their marriage is a loveless one. However, Tsuyuri celebrates in this, as she sees it as a chance to freely enjoy her otaku life. But one day, when Tsuyuri goes to a concert for her bias, she runs into Koichi, and he's in an unexpected get-up?! Their marriage may have started out political, but this story is full of non-stop thrills as they experience many firsts in their newly-wed life!

(Source: MangaPlaza)