The highly anticipated anime adaptation of Masuo Kinoko’s A Gatherer’s Adventure in Isekai (Sozai Saishuka no Isekai Ryokōki) has taken a significant step toward its October 2025 premiere with the release of its first promotional trailer and a vibrant key visual. Announced on July 23, 2025, these new assets offer fans a tantalizing glimpse into the fantasy adventure awaiting them in the world of Madeus.
The trailer, brimming with dynamic visuals, introduces the lush and magical setting of the series, showcasing sweeping landscapes and intense action sequences. It highlights protagonist Takeru Kamishiro and his companion Vee, alongside other travelers, as they embark on a journey filled with wonder and danger. The trailer is elevated by the energetic opening theme song Prologue, performed by the VTuber music unit Nornis, which sets an adventurous tone for the series. The key visual, equally captivating, features Takeru prominently in the foreground, exuding determination, with Vee and other characters framed against a backdrop of a fantastical world, hinting at the camaraderie and challenges to come.
Directed by Yoshinori Odaka, known for his work on Mr. Villain’s Day Off and Osomatsu-san Season 4, the anime is a collaborative production between Tatsunoko Production and SynergySP. Gigaemon Ichikawa, who has penned scripts for A Galaxy Next Door, oversees the series composition, while Mayumi Watanabe, recognized for Too Cute Crisis, designs the characters. The music, composed by Hiroshi Takaki, whose credits include Witchy Precure! and AKB0048, promises to enhance the series’ immersive atmosphere. GENCO serves as the producer, ensuring a polished execution of this ambitious project.
The main cast brings the characters to life with notable talent. Nobunaga Shimazaki voices Takeru, infusing the everyman-turned-hero with relatable charm and resolve. Ayasa Ito lends her voice to Vee, Takeru’s spirited companion, while Makoto Koichi portrays Brolyte, adding depth to the ensemble. The involvement of Nornis for the opening theme further underscores the production’s commitment to blending modern flair with classic isekai storytelling.
What is A Gatherer’s Adventure in Isekai about?
The anime is based on Masuo Kinoko’s light novel series, which began as a web novel on the AlphaPolis platform on July 7, 2016. The first print volume was published on January 31, 2017, and as of March 2025, the series spans 16 volumes, with a circulation of 1.73 million copies, including digital editions. Illustrated initially by Senbon Umishima for volumes 1-4, then by Katsuki Onda for volumes 5-6, and currently by Susumu Kuroi from volume 7 onward, the novels have garnered acclaim, winning both the Grand Prize and Readers’ Choice Award at the 9th AlphaPolis Fantasy Novel Prizes. A manga adaptation by Tomozo, launched in December 2017, is available digitally in English via AlphaPolis’ Alpha Manga app, with the eighth volume released in August 2024.
The story follows an ordinary man thrust into an extraordinary world. As described by Alpha Manga:
Takeru Kamishiro is a normal guy with an ordinary office job, but finds himself summoned to another world. Takeru starts his new life in ‘Madeus’, a world with swords and magic, fully equipped with multiple skills! Not only does he have enhanced physical and amazing magic abilities, but also the power to ‘search’ for valuable items. With the cheat skills he’s been provided, Takeru starts his new adventure in the new isekai!!
This premise sets the stage for a thrilling exploration of a fantasy realm where Takeru’s unique abilities promise both opportunity and peril. With its October 2025 debut fast approaching, A Gatherer’s Adventure in Isekai is poised to captivate audiences with its blend of classic isekai tropes and fresh storytelling. The trailer and key visual have set high expectations, and fans can look forward to a journey filled with magic, adventure, and the thrill of discovery in the world of Madeus.
Sources: Official website and X account of A Gatherer’s Adventure in Isekai
