Taiga Sassa's long-running manga Isabella Bird in Wonderland - Unbeaten Tracks in Japan is heading toward its finale. The series will conclude with its final chapter in Kadokawa's Harta magazine's 137th issue on September 15, 2026.

The manga entered its final arc back in April 2024, setting the stage for this conclusion. Over its 13-year serialization in Harta starting in 2013, the series has collected 13 volumes, with the latest published in October 2025.

Isabella Bird in Wonderland takes readers on a historical journey through the eyes of Isabella Bird, a real British adventurer and writer. The manga chronicles her travels from Tokyo to Ezo—the region now known as Hokkaido—during Japan's early Meiji era. Rather than presenting a straightforward historical account, the series captures the wonder and cultural clash of a Western woman experiencing Japan during a period of rapid modernization.

The manga's appeal extends beyond anime fans. Kadokawa published a bilingual English-Japanese edition of the first volume in January 2018, specifically designed for both beginner and advanced English learners studying in Japan. This edition featured English text in the manga panels with Japanese translations in the margins, making it a unique educational resource.

With 13 years of serialization coming to an end, readers who've followed Bird's journey since 2013 will finally see how Sassa resolves her story. The September 15 end date gives fans just a few months to catch up if they haven't already, and those who've been reading can prepare for the conclusion.