Setouchi PR Unit (瀬戸内PR部隊) is a special/single unit of STU48. The unit was appeared for the first time in 6th single Hitorigoto de Kataru Kurainara in 2021.
Singles
Hitorigoto de Kataru Kurainara
Boku wa Kono Umi wo Nagameteru (7 members) (Kadowaki Miyuna Center)
- 1st Generation: Ishida Chiho, Iwata Hina, Kadowaki Miyuna, Takino Yumiko, Fukuda Akari, Yabushita Fu
- 3rd Draft: Oki Yuka
Iki wo Suru Kokoro
Egao no Chance (Season 2 Version) (7 members) (Ishida Chiho Center)
- 1st Generation: Ishida Chiho, Fukuda Akari
- 3rd Draft: Oki Yuka, Nakamura Mai
- 2nd Generation: Osaki Serika, Takao Sayaka, Yoshizaki Rinko
Trivia
- On March 28th, 2021 they had a joint live performance with Sashihara Rino's idol group ≠ME (Not Equal Me).
- On May 11th, 2021 they had a joint live performance with the idol group Task Have Fun.
- On August 17th, 2021 they had a joint live performance with Akimoto Yasushi's idol group Last Idol.
- on August 6th, 2022, appeared at the Tokyo Idol Festival 2022.