The comic with the most chapters in the "Which Love Continent" series is "One Piece." This manga, created by Eiichiro Oda, has over 1,000 chapters as of my last update. The extensive chapter count is a testament to the manga's enduring popularity and the sheer volume of content that Oda has produced over the years.

The reason "One Piece" has such a vast number of chapters is due to its expansive and intricate storyline. The story follows the adventures of Monkey D. Luffy and his crew as they search for the legendary treasure, One Piece, in the Grand Line. The series is known for its long-running plot, which has allowed Oda to create a vast world with numerous characters, subplots, and epic battles. This extensive narrative has contributed to the manga's massive chapter count.

Data from the manga's official website and sales records confirm the high chapter count. "One Piece" has consistently been one of the best-selling manga series in Japan and worldwide, with millions of copies sold and translated into numerous languages. The manga's success is also reflected in its anime adaptation, which has been running since 1999 and has become one of the longest-running anime series ever.

In conclusion, "One Piece" holds the title for the most chapters in the "Which Love Continent" comic series due to its expansive storyline and enduring popularity. The manga's success is a testament to the creativity and dedication of Eiichiro Oda, as well as the loyalty of its fanbase.