After having to deal with jealousy from his co-workers for working under his father's name, prideful literary editor Ritsu Onodera is determined to establish himself in the industry. To accomplish this, he quits his job at his father's publishing company and transfers to Marukawa Publishing. But instead of being placed in their literary division, Ritsu finds himself working as the rookie manga editor for the Emerald editing department, a team that operates under extremely tight schedules in order to meet deadlines. There, Ritsu is introduced to the infamous editor-in-chief Masamune Takano, a persistent man who strives for results. As it turns out, Takano is actually Ritsu's high school love, and it is the aftermath of that heartbreak has caused Ritsu's reluctance to fall in love again. Now with the two reunited after several years of separation, the reestablishment of their relationship is marked by Takano's vow to make Ritsu say that he loves him again. Sekaiichi Hatsukoi follows three couples that are interconnected within the manga industry, with each being subject to the budding of first love.

Saraiya Goyou follows Masanosuke Akitsu, a wandering ronin adrift in Japan's peaceful Edo period. Despite being a skilled swordsman, Masa's meek personality has netted him the label "unreliable," and he is often abruptly dismissed by his employers, leading him to question his resolve as a samurai. As Masa reaches his lowest point, he is approached by Yaichi, a carefree man draped in pink who seemingly hires him on a whim as his bodyguard. Unbeknownst to Masa, the job is not as innocent as it seems, and he is drawn into the illicit activities of the group spearheaded by Yaichi. As he becomes further entwined with the gang known as the "Five Leaves," Masa struggles with his own principles. Still, his curiosity spurs him forward to uncover the past and motivations of this mysterious band of outlaws. [Written by MAL Rewrite]

On her way home from school, Yukari Hayasaka is approached by a weird-looking guy who starts looking at her body intently. He's got blond spiky hair, a spiked choker, and multiple piercings on his ears and face. She wants nothing to do with him, and runs away, only to bump into a very tall and beautiful purple-haired woman with a flower pattern around her eye. Yukari faints from shock and wakes up later in a strange place called the Atelier. It turns out that these strangers are fashion designers who attend the most famous art school around, Yazawa Art Academy, and their group wants Yukari to model for their brand in Yazawa Academy's upcoming show. Yukari turns down their offer and escapes the Atelier, but unknowingly leaves her school ID behind. George Koizumi, the head designer, later sees it and immediately knows she would be the perfect model for them and will not stop until he gets what he wants—and he wants her. Yukari had never considered something as frivolous as modeling before, but could life among these eccentric designers actually prove to be fun? Or will Yukari lose herself in this world of art and passion? [Written by MAL Rewrite]

In the year 2005, a race of alien monsters called Zonders emerge from underground and launch a series of attacks on the city of Tokyo. The only defense against these creatures is the secret agency known as the Gutsy Geoid Guard (or 3G) and their ultimate weapon, the awesome giant robot GaoGaiGar. GaoGaiGar's pilot, Guy Shishio, is a former astronaut who was nearly killed two years before when the Zonders first crashed to earth. Guy's life was spared when a mysterious robot lion called Galeon pulled him from the burning shuttle and brought him to Earth. Guy's father, Leo, then used Galeon's technology to rebuild his shattered son as a cyborg, in the hopes that he could stop the aliens when they appear. Now, with Galeon as its core, GaoGaiGar fights to protect Earth. He is aided by a team of transforming robots and by a young boy named Mamoru, who has the power to purify the Zonders' cores, and seems to be connected to the mysterious Galeon. (Source: ANN)