SID will consecutively release three digital singles from November. They will also release a CD single titled "Houkiboshi" containing the three songs on December 23. 

The three songs were written for their fans that they couldn't see during the coronavirus outbreak. The first of the three digital singles, "Houkiboshi," will be released on November 23, and it was composed by Shinji (G). The next single, "siren," composed by Aki (B) will drop on December 7. Finally, composed by Yuya (Dr), "Kowairo" will be available on December 21.

As for their CD single, it will be released in both limited and regular editions. The limited edition will come with a photobook.