Back then, and even now... the feeling hasn't changed. Be aware of me soon!

When did he become so cool...! No, no, no! I thought he was just a cute younger brother-like childhood friend, but now, six years later... From before dating to after dating, all the time before you know it. My heart is pounding.

The long-awaited book version of the popular heart-wrenching short manga depicting six years ago and after! 2-saisa no Osananajimi is a web manga released on the author's Twitter and pixiv accounts on August 20, 2021, and published in print by Kadokawa on February 10, 2023.