Love and Envy Make a Man Pine.
Shota Kisa, an editor at Marukawa Bookstore's Emerald Editing Department, is in a relationship with a younger art school student named Kou Yukina. Despite being happy with Yukina, Kisa feels anxious that Yukina never voices any complaints about Kisa prioritizing work over their relationship. Finally realizing that things cannot continue as they are, Kisa makes a promise to finally make time to meet with Yukina...?
Aired 26/11/2011EP 8 - Love and Envy Make a Man Pine.
Sekai Ichi Hatsukoi - The World's Greatest First Love Season 2
First loves are messy. While settling in as a shoujo manga editor at the famous Marukawa Publishing House, Ritsu Onodera is quite troubled. Working under the stern and superb Masamune Takano is hard enough as it is. However, Masamune is not only Ritsu's first love from middle school but he also suddenly declares that he will make Ritsu fall for him again.
Unknown to them, another editor in the department, Yoshiyuki Katori, is in a relationship with the popular manga artist Chiaki Yoshino. The carefree Chiaki fails to notice, however, that his high school friend—Yuu Yanase—thinks of him as more than a friend. The stoic but caring Hatori will not surrender his love so easily.
Falling in love for the first time when you are 30 is certainly troublesome. Shouta Kisa, yet another editor, is going out with 21-year-old Kou Yukina, an art student. Despite Yukina's assurances, Kisa cannot help but doubt whether someone like himself is truly worthy of his younger, "sparkling" boyfriend.
(Source: MAL Rewrite)