The World's Greatest First Love

Sekai Ichi Hatsukoi is created by Shungiku Nakamura, known for her detailed and heartfelt boys’ love stories.

It first appeared in magazines such as The Ruby, CIEL, and later Emerald, starting from 2008.

The series shares an interconnected universe with Nakamura’s other hit, Junjou Romantica, taking place 13 years after the “Mistake” arc from Junjou Romantica.

The story is primarily set at Marukawa Publishing, a multi-genre publishing company with dedicated floors for literature, manga, and other editorial departments.

Special focus is given to the Emerald Department, its passionate editors, star manga creators, and the sometimes-chaotic, deadline-driven world of manga making.

Through departments like the Emerald (shoujo manga), Saphire, and Japun divisions, the series explores both the glitz and stress of Japan’s publishing world, reflecting real industry practices and the rigorous schedules endured by creators and editors.

The main storyline follows Ritsu Onodera, a young literary editor trying to prove himself after accusations of nepotism at his family’s company.

He transfers to Marukawa Publishing’s Emerald Department, only to rediscover his high school first love, Masamune Takano, who now serves as his intimidating, yet undeniably skilled, boss.

Their clashing personalities and unresolved history spark both conflict and renewed passion, as Ritsu learns about the dedication and chaos of being a manga editor.

Other story arcs explore the romances and professional struggles of characters like Chiaki Yoshino, a superstar manga artist; Kou Yukina, a charismatic bookstore clerk; Yoshiyuki Hatori, the efficient deputy chief editor; and Takafumi Yokozawa, a devoted sales rep recovering from unrequited love.

Each arc delves into the unique pressures of the manga industry, unrequited love, personal growth, and the bittersweet nature of first loves that never quite faded.

• Marukawa Publishing: A leading publisher in Tokyo, the main setting, based on Kadokawa.
• Emerald Department: The all-male shoujo manga editorial team, nicknamed "the Maiden Squad".
• Twinkle: The department’s rabbit mascot symbolizing good luck.
• Japun Department: Responsible for popular shounen manga.
• Shuudansha: Rival publisher, referencing the real-world Shueisha/Kodansha.
• Teito Hotel: Frequently used venue for celebratory events in both this series and Junjou Romantica.

• Manga: Ongoing since 2008, currently at 19 tankobon volumes (as of May 2024).
• Light Novels: Spanning stories like Chiaki Yoshino’s and Takafumi Yokozawa’s arcs, totaling 10 volumes across multiple character perspectives.
• Anime: Two seasons aired in 2011, each with 12 episodes, animated by Studio DEEN.
• OVA: Special episodes, such as the Ritsu Onodera “Episode 0” and Yoshiyuki Hatori’s “Episode 12.5,” offer extra content aligned with manga releases.
• Theater Films: Including “Sekai Ichi Hatsukoi: Yokozawa Takafumi Case” (2014) and “Sekai Ichi Hatsukoi – Proposal Arc” (2020).
• Drama CDs: Adapt multiple storylines with original voice casts for audio enthusiasts.
• Web Radio: Featured bi-weekly online broadcasts hosted by the anime voice actors, including guest segments and fan stories.

The anime adaption shares much of its staff with Junjou Romantica, including director Chiaki Kon and character designer Yoko Kikuchi, preserving consistency in style and tone.

The animation is handled by Studio DEEN, well known in the shoujo and BL genres for their vibrant, expressive character work.

Special events such as the “Premium Night” and “Happy Christmas Event” provided direct interaction with fans and additional promotional content.

The series is known for catchy, heartfelt songs:

• Season 1 Opening: “Sekai de Ichiban Koishiteru” by Shuuhei Kita.
• Season 1 Ending: “Ashita, Boku wa Kimi ni Ai ni Iku” by Wakaba.
• Season 2 Opening: “Sekai no Hate ni Kimi ga Itemo” by Shuuhei Kita.
• Season 2 Ending: “Aikotoba” by SAKURA Merry Men.

Movie and OVA editions feature new tracks, often performed by the same artists.

By December 2017, total manga sales exceeded 13 million copies, a testament to its enduring popularity.

Praised for its realistic depiction of the manga and publishing industry, well-developed characters, and nuanced exploration of love and professionalism, it stands as a staple in the boys’ love genre.

The series enjoys a broad, loyal fanbase, with adaptations into games, stage readings, and international releases.

Influential beyond its original medium, Sekai Ichi Hatsukoi has inspired special collaborations (such as with Animate and themed escape games), showing its cross-media appeal.

Collectors’ editions, event tickets, and merchandise remain highly sought after by fans.

It continues to serve as inspiration for aspiring creators and BL fans alike, celebrated for its balance of workplace drama and heartfelt romance.