Amaku Naru made Matemasen

A romantic comedy manga that centers on Mei, an ordinary office worker, who just wants to work normally, get married normally, and be happy normally. Until her brother, who is in charge of their family's Japanese sweets shop got sick, and he asks her to take over and be the president. Trouble starts coming one after another, especially when a sadistic secretary starts working for her.

(Source: Anime News Network)