Thanks to NetGalley for the review copy in exchange for an honest review.

Unfortunately, this book's pacing and the story's major plot point were two things that made this book not work for me. I feel like the break-up between the two main characters could be handled much better, it felt too drastic and maybe even pointless. And while I liked Mishima enough and found his relationship with his work and with his late grandfather to be an interesting point in the story, I couldn't find myself caring about Hozumi and their relationship for at least 3/4 of the book. As I mentioned in the beginning, if the pacing was better and the story focused more on the way they mended their relationship instead of focusing on their high school years, I would be more invested. 
If there's something I liked, it would be Hozumi's brother and the lighthouse. The art style was good, but I wouldn't say it felt too exceptional compared to other mangas.
Overall, I was pretty disappointed by this story, but I wouldn't say it was catastrophic.