A childhood friend returns after seven years. The catch? She’s now unmistakably a girl, and our protagonist never clocked it. It’s a premise that in lesser hands could feel as contrived as a magician’s revealed trick, but the second trailer for Oh Boy, Was I Wrong About Her suggests a show with a clearer grasp on its own mechanics — a romantic comedy where the reunion is the engine, not just the tagline.
Landing on Crunchyroll on with international availability confirmed, the series leans into this central confusion as its core. The second trailer confirms the ending of the season and the new footage — paired with a second main visual — doesn’t just sell gags; it sells a tonal commitment. The closer look at the characters and the central reunion between Hayato and Haruki reads as visual storytelling done right.
Music and Sound
The opening theme Natsu and Kasanete
is performed by the reliably excellent Dialogue+, while the new ending Tilt
is delivered by rising duo harmoe. Music is composed by Ryosuke Nakanishi, Naoki Tani, and Yuri Morita, with production handled by Pony Canyon and sound direction by Daiki Hachimaki. This is a curated emotional palette — not background noise.
Voice Cast
- Ikumi Hasegawa as Haruki Nikaido — known for Nagatoro in Don’t Toy with Me, Miss Nagatoro and Yua Seruvia in Isekai Nonbiri Nouka. Proven in navigating the delicate balance between teasing and vulnerability.
- Shunichi Toki as Hayato Kirishima — the confused protagonist whose vocal dynamic with Hasegawa needs to sound genuine, not just dumb.
- Miharu Hanai as Himeko Kirishima — also known as Mary in Mebius Dust with supporting roles in recent school fantasy and comedy productions.
- Natsumi Haruse as Minamo Mitake.
- Fuka Izumi as Saki Murao — together with Haruse, filling out a social ecosystem beyond the central pair’s awkward dance.
Production Team
Direction is handled by Chuan Feng Xu, with Deko Akao supervising scripts and N-Nei Kurahashi in charge of character design, working from the original illustrations by Siso. The animation opts for expressive clarity over chaotic comedy — you can read the history of embarrassment and sudden recognition in Hayato’s posture alone.
The Source Material
Oh Boy, Was I Wrong About Her is a light novel by Yu Hibari with illustrations by Siso, originating on Shosetsuka ni Naro in 2020 with print publication by Kadokawa from 2021. The manga adaptation by Oyama has run on Comic Walker since that same year. That’s six years of refining this core premise into a narrative. The story follows Hayato who, upon transferring to a high school in the city, is reunited with Haruki — whom he remembers as a childhood playmate. The twist: Haruki is actually a girl, beginning a romantic comedy built around that reunion and the surprises it brings.
The question isn’t whether the premise is original; it’s whether the execution has learned from the genre’s history. The best romantic comedies know the twist is merely the first domino. The real work is what happens after it falls.
Questions Worth Scrutinizing
- Does the
misunderstood gender
hook allow for authentic character growth, or does it risk reducing Haruki to a long-running punchline? - In a crowded summer slate, can a series built on a seven-year-old oversight sustain its momentum once the initial surprise wears off?
- Is this the story of correcting a mistake, or discovering what was missed entirely?
A polished production, a cast with the right tools, and a premise that’s less a shock and more a starting gun. The data is on the table. Lets gooo.
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