The summer 2026 anime season has brought many romantic comedies, but one title has been steadily gaining attention for its fresh take on the childhood friends trope. Oh Boy, Was I Wrong About Her (Japanese: Tenkō-saki no Seiso Karen na Bishōjo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken) has completed four episodes, and fans are now looking forward to Episode 5. The series, produced by Project No.9 and directed by Xu Chuan Feng, premiered on July 6, 2026. It adapts the popular light novel series written by Yu Hibari and illustrated by Shiso, which began on the user-generated novel site Shōsetsuka ni Narō in June 2020 before being picked up by Kadokawa Shoten.
If you have not started watching this show yet, here is everything you need to know about Episode 5, where to stream it, what has happened so far, and why this anime deserves a spot on your watchlist.
Episode 5 Release Date and Global Streaming Time
Episode 5 of Oh Boy, Was I Wrong About Her is scheduled to air on Monday, August 3, 2026. The episode will first broadcast on Japanese television at 11:30 PM JST.
For international viewers, the episode will be available on Crunchyroll as part of the summer simulcast lineup. Crunchyroll streams the series worldwide, excluding Japan and China. New episodes release on the platform at the following times:
- Pacific Daylight Time (PDT): 8:00 AM
- Mountain Daylight Time (MDT): 9:00 AM
- Central Daylight Time (CDT): 10:00 AM
- Eastern Daylight Time (EDT): 11:00 AM
- Greenwich Mean Time (GMT): 3:00 PM
The series will have a total of 12 episodes, with new episodes releasing weekly on Mondays.
Where to Watch Oh Boy, Was I Wrong About Her
Crunchyroll is the primary streaming platform for Oh Boy, Was I Wrong About Her outside Japan. The service offers the series with English subtitles. In Japan, the anime is available on d Anime Store, ABEMA, and U-NEXT, among other services.
Currently, there are no free streaming options available for the series. Viewers will need a Crunchyroll subscription to watch the show. The series is also available through the Crunchyroll Amazon Channel.
Episode 5 Story Preview: Feelings Begin to Shift
The story and preview images for Episode 5 have been released. Titled with the theme of shifting feelings, the episode focuses on the growing emotional tension between the main characters as their childhood friendship begins to evolve into something more.
Haruki feels strangely anxious when she sees Hayato chatting amiably with Minamo. Meanwhile, Hayato panics upon hearing a rumor that Haruki might be the crush of Kazuki Kaido, a popular member of the soccer club. As their relationship as childhood friends subtly changes, the two begin to become conscious of each other.
On a lighter note, Haruki and Himeko are shocked to discover they have gained weight and declare a diet. Troubled over what meals to prepare, Hayato turns to Himeko’s local friend, Saki, for advice. This blend of romantic tension and comedic relief continues to be a hallmark of the series.
Previous Episode Recap: What Has Happened So Far
For those who need a refresher or are considering jumping into the series, here is a recap of the story so far.
The Premise
The series begins with a simple but effective hook. Seven years ago, a young boy made a precious promise with his close male friend: “We’ll be best friends forever!”. That boy is Hayato Kirishima, and his friend was Haruki—whom Hayato always believed was a boy.
Years later, Hayato transfers to a high school in the city and reunites with that very same childhood friend. But Haruki has transformed into a neat and radiantly beautiful young woman, admired by everyone at school as an unattainable beauty. The shock for Hayato is immediate: the scrappy, mud-covered kid he used to run around with in the countryside is now the girl every guy dreams about.
However, the moment Haruki and Hayato are left alone, the mask drops. She flashes the exact same smile and playful energy from their childhood days, reacting in the same crass way she did back then. The series follows these two as they navigate their rekindled friendship, with Haruki maintaining a perfect schoolgirl persona in public while being her true, unfiltered self only around Hayato.
Episode 1 to 4 Highlights
The first four episodes established the core dynamics of the series. Episode 1 introduced the reunion and the shocking revelation that Hayato’s childhood buddy was a girl all along. The premiere was described as handling the gender reveal surprisingly well, though some critics noted the animation felt stiff and the character designs bland.
Episodes 2 through 4 developed the relationship between Hayato and Haruki as they reconnected. The series balances comedy with the slow-burn romantic setup, with Haruki teasing Hayato about not having a mobile phone and their friendship gradually deepening. The childhood friend trope gets a genuine twist here since Hayato’s entire understanding of who Haruki was gets completely flipped.
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Why You Should Watch This Anime
Oh Boy, Was I Wrong About Her offers something refreshing in the crowded romantic comedy genre. The central premise—a boy reuniting with his childhood friend who he always thought was a boy—creates a natural source of comedy and emotional depth. The show does not rely on cheap misunderstandings or forced drama. Instead, it finds humor and heart in the simple fact that Hayato and Haruki have to redefine their relationship after seven years apart.
One of the standout elements of the series is Haruki Nikaido as a protagonist. Critics have noted that she succeeds as a character because she never feels manufactured. She is ultra-polite and feminine at school but falls into more casual, boyish speech patterns and mannerisms when she is alone with Hayato. This duality makes her feel like a real person rather than a collection of anime tropes.
The series also benefits from a strong production team. Ikumi Hasegawa voices Haruki Nikaido, with Shunichi Toki as Hayato Kirishima. The opening theme song “Natsu ni Kasanete (Adding to Summer)” is performed by DIALOGUE+, and the ending theme “Tilt” is performed by harmoe. The music adds to the show’s warm, nostalgic atmosphere.
With Episode 5 promising to deepen the emotional stakes—Haruki feeling anxious about Hayato talking to another girl, and Hayato panicking over rumors about Haruki—the series is entering a phase where the romantic tension will likely escalate. The show has been described as “light and fun,” with an ease and comfort between the two main characters that makes their interactions enjoyable to watch.
For fans of romantic comedies, school anime, or anyone who enjoys a good childhood friends story, Oh Boy, Was I Wrong About Her is worth your time. With 12 episodes planned and new episodes arriving weekly, now is the perfect time to catch up before Episode 5 drops on August 3.
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