Kōhei Arai is an average second‑year student at Sakura High School. He enjoys video games, reading manga, and keeping a low profile. One day, during a summer school festival, he is paired with Hinata Natsuiro for a “partner dance” event. Hinata’s bright personality and her habit of making teasing, borderline‑ecchi comments (“If you’re that shy, I might have to…”) catch Kōhei off‑guard.
Setting and Premise The story takes place during the height of a humid, vibrant Japanese summer. The protagonist returns to a quiet, seaside town—away from the bustle of the city—to stay at his family’s home. The atmosphere is thick with the scent of the ocean and the deafening chirping of cicadas, setting a nostalgic and somewhat isolating tone.
The central theme is the reunion and deepening relationship between the protagonist and Hinata, his cousin (or childhood friend, depending on the specific interpretation of the "cousin" trope common in this genre). They haven't seen each other in years, and the passage of time has turned them from playful children into young adults, creating an immediate barrier of awkwardness and unspoken tension.
| Date | Event | |------|-------| | Mar 2021 | Debut of chapter 1 in Monthly Comic Beam (issue #3). | | Oct 2021 | Release of Volume 1 (Tankōbon) – 180 pages. | | Jun 2022 | Series wins the Newcomer Manga Award (Seinen Category) at the Japan Media Arts Festival. | | Sep 2024 | Final chapter (Chapter 72) published, ending the serialization. | | Nov 2024 | Volume 8 released, completing the collected edition. | | 2025 | Licensed for English translation by Seven Seas Entertainment (digital and print). | Natsuiro Hinata Ecchi Na Kanojo To Tokeau Kokoro
The manga’s art is handled by illustrator Miyako Tanaka, whose clean line work and expressive character designs have been praised for conveying both comedic timing and subtle emotional beats. The script is written by Ryo Shimada, a former light‑novel author known for blending slice‑of‑life scenarios with slightly risqué humor.
Weeks later, at the cultural festival, their club booth overflowed with customers. Amid the chaos, Hinata tugged Tatsuya into a quiet corner.
“Remember that ‘exercise’?” she whispered, twirling the ends of his tie. His breath hitched. “What are you—” Kōhei Arai is an average second‑year student at
“I just wanted to thank you,” she said, her eyes serious now. “You helped me become a better leader. And… a better me.” Her fingers brushed his cheek, and suddenly, the world was quieter—just the hum of spring and the warmth of her smile.
“Tatsuya,” she breathed, “I think I’ve liked you a lot longer than I admit.”
Before he could respond, she kissed him—soft as cherry blossoms, brief as a heartbeat. When she pulled back, her cheeks were pink, but her eyes sparkled with confidence. “Now, as your girlfriend, I command a proper confession when I’m ready!” She blew him a kiss, then sprinted off, leaving a stunned, blushing Tatsuya in her wake. | Date | Event | |------|-------| | Mar
The story begins with the protagonist arriving at the traditional Japanese house. He is greeted by Hinata. Unlike the tomboyish child he remembers, she has blossomed into a cheerful, sun-kissed young woman. However, her signature energy is undercut by a noticeable shyness. She hides behind doors and peeks out, struggling to bridge the gap between their past intimacy and their current reality.
The first few days are defined by "remaking bonds." They engage in classic summer activities—eating watermelon, cleaning the veranda, and walking to the local shrine. Hinata tries desperately to act normal, but her "ecchi" (lewd/naughty) streak begins to show through the cracks of her innocent exterior. It isn't malicious; rather, it is a manifestation of her overwhelming affection and her physical attraction to the protagonist, which she doesn't know how to express verbally.