The Limited Editions B to F each contain an additional track, a solo version of the title song performed by a Cute's member.

All the limited editions are shipped sealed and include a serial-numbered entry card for the lottery to win a ticket to one of the single's launch events.

[3] Concerning the lyrics, in his blog Tsunku wrote that the girl who sings the song is worried as if she and the boy will never see each other again, but he thinks that they will certainly meet the next day at school.

As Airi Suzuki noted, in the music video the band tried to reproduce the story told in the song's lyrics like in a TV drama.

[4] The S/mileage version was used as a theme song in Kaidan Shin Mimibukuro Igyō, a movie starring S/mileage members that came out on August 11 in the same year.