Oh Boy, Was I Wrong About Her is heading into its final episode. The romantic comedy anime has built a steady following since it started on July 6, 2026, and the season finale, Episode 12, arrives on Monday, September 21, 2026. The story of Hayato and Haruki, two childhood friends who lost touch and then found each other again in a city high school, wraps up its first season with this episode.
The show has been a weekly watch for fans of light novel romantic comedies. Its central twist, that Hayato’s old pal Haruki was a girl all along, gave it a fresh angle on the childhood friend trope. Now the season closer promises to bring the pair’s slow-burn relationship to its most important point yet. Here is everything fans need about when and where to watch, what happened in the last episode, and what to expect from the finale.
When Exactly Does Episode 12 Come Out
The final episode lands on Crunchyroll for viewers outside Japan on Monday, September 21, 2026, at 8:00 a.m. Pacific Daylight Time. That translates to 11:00 a.m. Eastern Daylight Time. In Japan, the episode airs on Tokyo MX at 11:30 p.m. JST on the same day, which is effectively the early hours of September 22 for some viewers in the region. The episode is about 24 minutes long, in line with the rest of the season.
For fans who prefer subtitles, Crunchyroll releases the episode with English subs at the same time worldwide, so there is no extra wait for non-Japanese viewers.
Full Global Release Times for Every Major Region
Here is the exact streaming time for Episode 12 on Crunchyroll across the world’s most popular viewing locations. Times are listed by shared time zones to make it easy to find your region.
- USA (Pacific) / Canada (Vancouver): 8:00 a.m. PDT
- USA (Mountain): 9:00 a.m. MDT
- USA (Central) / Mexico (Mexico City): 10:00 a.m. CDT
- USA (Eastern) / Canada (Toronto) / Peru / Colombia: 11:00 a.m. EDT
- Brazil (São Paulo) / Argentina (Buenos Aires): 12:00 p.m. BRT / ART
- United Kingdom (London) / Portugal (Lisbon) / Ghana (Accra) / Ireland (Dublin): 3:00 p.m. BST / GMT
- Central Europe (Germany, France, Spain, Italy, Poland, Netherlands): 4:00 p.m. CEST
- Eastern Europe (Greece, Romania, Ukraine, Finland): 5:00 p.m. EEST
- India (Mumbai, Delhi): 8:30 p.m. IST
- Japan (Tokyo) / South Korea (Seoul): 12:00 a.m. JST / KST (September 22)
- Australia (Sydney, Melbourne): 1:00 a.m. AEST (September 22)
- New Zealand (Auckland): 3:00 a.m. NZST (September 22)
These times are based on the official Crunchyroll simulcast schedule and may shift slightly if the platform updates its release window.
Episode 11 Recap: A Visit to Mom and a Trip Plan
Episode 11, which arrived on September 14, 2026, focused on a quieter but important chapter for Hayato. The episode showed him visiting his mother in the hospital. This was a significant moment because the series had been hinting at family complications for a while. Haruki’s own family situation, including the reveal that her mother is the famous actress Mao Takakura, had already been a major thread in the story. Seeing Hayato deal with his mother’s health brought his personal struggles to the front and added emotional weight to his character beyond the romance with Haruki.
The episode also showed Hayato making plans with Haruki and Himeko to go somewhere together. This trip, which has been set up but not yet shown, is likely to play a role in the finale. The choice to bring Himeko along adds a family dimension to the outing, since she is Hayato’s younger sister and has her own bond with Haruki. Fans watching closely may have noticed that the episode ended on a note of anticipation, with the group’s plans left open for Episode 12 to pick up.
What to Expect From the Finale
Episode 12 is titled as the season finale, and it has a lot of emotional ground to cover. The setup from Episode 11, the hospital visit, the trip plan with Haruki and Himeko, and the ongoing development of Hayato and Haruki’s feelings, all point toward a finale that will bring the pair closer together and likely resolve the biggest questions about their relationship.
The show has been building toward a confession or a clear step forward for Hayato and Haruki. Their promise from childhood, to always be together, has been the emotional backbone of the entire season. With the light novel series having concluded at volume 11 and the anime covering the early parts of that story, the finale is expected to land on a strong emotional beat for the two leads.
Himeko’s role also matters here. She has been more than just a side character. Her moments with Haruki have added a light, family-like warmth to the show. The trip that was set up in Episode 11 should give all three characters a chance to share screen time in a way that brings the season’s themes of friendship, family, and young love together.
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Things You Might Not Know About the Series
A few details about this anime go beyond what most viewers see on screen. The original light novel was written by Yu Hibari and illustrated by Shiso. It began on the user-generated novel site Shōsetsuka ni Narō in June 2020, before Kadokawa acquired it and published it under the Kadokawa Sneaker Bunko imprint starting in February 2021.
The series concluded with its 11th and final volume, which was released in Japan on July 31, 2026, right around the time the anime was airing. The manga adaptation by Kina Ōyama ran from September 2021 to June 2025 and was collected into seven volumes.
The anime is produced by Project No.9 and directed by Xu Chuan Feng. The series composition is handled by Deko Akao, whose previous work includes Komi Can’t Communicate and Witch Watch. The opening theme, “Natsu ni Kasanete (Adding to Summer)”, is performed by Dialogue+, while the ending theme, “Tilt”, is by harmoe.
The Japanese title of the series is Tenkō-saki no Seiso Karen na Bishōjo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken, which translates roughly to “The Neat and Beautiful Girl at My New School Was My Childhood Friend Who I Used to Play With Who I Thought was a Boy.” The English title shortens this significantly, but the original captures the show’s entire premise in one long, playful phrase.
Another detail worth noting: Haruki still has the GameCube that she and Hayato used to play with when they were children. This small object has appeared in the story as a physical link to their shared past, and it carries emotional weight for both characters.
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