Kurosaki-san no Ichizuna Ai ga Tomaranai

Based on the manga of the same name by Okada Pico, this work is a romantic comedy about a high school girl and a genius novelist. Shirase Koharu, a high school student who helps run the onigiri shop Koharu is suddenly stunned when Kurosaki Ayato, a novelist and one of her regular customers, proposes out of the blue: “Please marry me, for this one billion yen.”
With no experience in love, Koharu finds herself gradually swayed by Kurosaki’s unpredictable advances.

A spin-off series that resolves the plot twists from each episode of the main series.
 
The spin-off drama depicts the untold backstory behind Kurosaki’s devoted love.