Hana and Kiss in the 2DK.

Hana, who works in a design office, moves into the same apartment as her senior colleague, whom she admires... Hana hopes that will improve her relationship with her senior. But when she wakes up in her new room on her first day, she finds a strange man sleeping in her bed... He seems to be the manager of the apartment... A love story that begins with a kiss, in an apartment where dreams bloom. (Source: Pixiv Sylph, translated) *Note: Includes one bonus chapter.*