Otaku Douryou to Gisou Kekkon Shita Kekka, Mainichi ga Meccha Tanoshii n dakedo!

Satsuki is a hard-working designer. She finishes all her jobs on-time so that she can pursue her hobby of doujin artist. Satsuki keeps her hobby a secret at work, until an idol-otaku suddenly proposes to her at an event(......) , and the man turns out to be her colleague, Takimoto-san. At work, he is an able businessman known for his cool efficiency, but in private he is a full-blown otaku. (Source: ComicWalker, translated)