泣キ虫カレシ (Nakimushi Kareshi)

Background
"Crybaby Boyfriend" is a song where Miku and Len break up and part ways. Throughout the PV are their memories together and how they both cried and laughed together. In the end of the PV, it is shown that Len has tears trailing down his face as he says "It's all over, I won't cry..."

This song is the prequel to "Suki Kirai". It is featured in the album Zutto Mae Kara Suki Deshita. and a -Hatsukoi MIX- version is featured exclusively in the album Hatsukoi Note.