In Love There Is Both Dotage and Discretion.
After Takano and another staff member have a heated argument in the Emerald office about an underprinted publication, Onodera sees the two of them later having a seemingly friendly conversation in the lobby, stirring a sense of jealousy within him. Perturbed by the fact that this bothered him, he begins avoiding Takano even more, prompting Takano to confront him about the situation before it begins affecting their capacity to work together.
Aired 23/04/2011EP 3 - In Love There Is Both Dotage and Discretion.

Sekai Ichi Hatsukoi - The World's Greatest First Love
Onodera Ritsu has just transferred from his father's publishing company to Marukawa Shoten. Assigned to the shoujo manga division, he crosses path with the person he'd least expected to meet. Takano Masamune is the editor-in-chief of the division Ritsu's been assigned to, and the two seem get off on the wrong foot right from the very start when Takano unexpectedly kisses him. However, there is more to than what meets the eye: Takano is actually Saga, Ritsu's senpai and high school love, whom Ritsu had thought to have played him for a fool by taking his affections for granted when he confessed and summarily dumped him.