This constitutes Sae Kawakubo’s first solo theater production, and the launch of her one-person unit Kawakubo Hitorigurashi for which she writes, directs, and performs. Three works old and new looking at older women, young people, and children respectively have been brought together as one work in a project that has seen the beginning of Sae Kawakubo’s theatrical life and career proper. The works in question are “Student,” which won the Grand Prix at Emi’s awards 2019; “27 years old,” which was performed as “23 years old” at APOFES2020, and reworked and performed in Osaka as “25 years old” at the solo drama festival INDEPENDENT: 21 and in Sendai at the invitation of INDEPENDENT:SND before being rewritten again as “27 years old”; and Kawakubo’s new work, “An Adult.”