As in the title of the song, a total of eight heart poses appear in the video.
While the theme of “12-gatsu no Snowry” was the “bitter” side of lost love, that of “Heartbeat Kyujoushou” is the “sweet” side of the winter love, including Valentine’s Day.
Following “12-gatsu no Snowry” (December’s Snowry), the five-member voice actress idol unit i☆Ris has posted a full music video for “Heartbeat Kyujoushou” (Heartbeat Rapid Rise), one of the two title tunes in their double A-side 21st single to be released on December 8, 2021.