The unit previously sang the OP theme songs for the two TV anime series, “Yamatonadeshiko Education” for the 1st season aired in Japan from July to October 2010, and “Hanasaku Saikyo Legend Days” for the second season aired from January to March 2014.
The official website for the upcoming anime film adaptation of Tozen Ujiie’s four-panel gag manga series Seitokai Yakuindomo is today updated with a newly-drawn key visual and posted a 30-second first trailer announcing its July 21, 2017 release date.
It is also announced that the yer-titled theme song for the film is performed by Triple Booking, the three-member voice actress unit consisting of Yoko Hikasa, Sayuri Hayagi, and Satomi Sato, and that its CD single will be released on July 19.