Hasegawa is a bit of a high school nobody. He's plain, quiet, and unassuming...so it's a huge shock when Hiyama, the sunny social butterfly of their class, suddenly confesses to him! But how do you date a classmate you've never even spoken to before? By starting a good old-fashioned diary exchange, of course! Entry by entry, two romance novices find a way to bridge the gap between them—and maybe even discover love along the way...

Koibito ga Ubusugite Komaru began as a web manga released on the author's Twitter and pixiv accounts on May 14, 2022, and published in print by Kadokawa on September 27, 2023. The manga was published in English as My Lover Is Just Too Innocent to Handle by Yen Press from April 28, 2026 to September 22, 2026.