The protagonist fails at his original mission (getting with Rina) precisely because he succeeds at the second mission (being her friend). He learns the mundane, unsexy reality of being a woman: period cramps, creepy DMs, the politics of skirts and bra straps, and the exhaustion of performing happiness.
The narrative centers around two main characters: Akiho Minami, a beautiful and seductive black gal (kuro gal), and Shinobu Takayama, a middle-aged office worker. Their unlikely friendship blossoms from their mutual love of food, leading to a series of comedic misadventures and heartwarming moments. The story explores their deepening bond as they navigate everyday life, sharing meals and laughter along the way. Kuro Gal ni Natta kara Shinyuu to Shite Mita