初恋の絵本 (Hatsukoi no Ehon)

Background
This song is part of Honeyworks' Confession Executive Committee Love Series and it focuses on Haruki and Miou's relationship, from Miou's point of view.

It has entered the Hall of Fame, reaching over half a million views on NND and a million on YT,

This song is also included in HoneyWorks' albums Hatsukoi Note, Rokugen Astrology and a version sung by Miou's voice actress, Toyosaki Aki, on Boku Ja Dame Desu Ka?.

Publications
A novel based on the song, called "First Love Picture Book", has also been written.