Sekai Ichi Hatsukoi - World's Greatest First Love

Determined to prove he can succeed on his own merits after facing resentment for being tied to his father’s publishing name, literary editor Ritsu Onodera leaves his old company and joins Marukawa Publishing. His fresh start takes an unexpected turn when he’s assigned not to novels, but to the Emerald manga editorial department—an intense workplace where rookie editors race against unforgiving deadlines. There, he meets the feared editor-in-chief Masamune Takano, a relentless professional known for demanding results.

The shock runs deeper when Ritsu realizes Takano is the boy he loved in high school, a relationship whose painful end left him wary of falling in love again. Reunited years later in the same office, their unresolved past resurfaces as Takano openly declares his intention to make Ritsu admit his feelings once more. Alongside their story, Sekai Ichi Hatsukoi weaves in the connected romances of three couples working within the manga industry, each confronting the stirrings of first love.