History Music / STU48

* KansaiRegionalAccent: The Hyogo prefecture is part of both Kansai and Setouchi regions, so members from there have the accent. There's also the Osakan Yabushita Fu.

* SurprisinglyGoodForeignLanguage: Since the 7th single release, the music videos on [=YouTube=] have included official subtitles in eight languages.

** Technicians who have been part of the ''senbatsu'' include Imamura Mitsuki, Okada Nana, and Ishida Chiho.

* TechnicianVersusPerformer: The group has no shortage of vocal technicians, as evident from the many members who became finalists in the annual [=AKB48=] Group No. 1 Singer Contests, and it also has the subunit STUDIO which focuses on performance techniques. However, most of them aren't included in the main single lineups, which are based on popularity, and they're usually given a B-side instead.

* RuleOfSeven: There are seven prefectures in the Setouchi Region (Hyogo, Okayama, Hiroshima, Yamaguchi, Tokushima, Kagawa, and Ehime).[[note]]Oita and Fukuoka also border the Seto Inland Sea, but are usually not included.[[/note]] Presumably because of that, the sports subunit is called Seto 7 and was formed with seven members. The group itself debuted in 201'''7'''. Also, their captain is Okada Nana, and SevenIsNana (she was born on November '''7''', 199'''7''').

* TechnicianVersusPerformer: The group has no shortage of vocal technicians, as evident from the many members who became finalists in the annual [=AKB48=] Group No. 1 Singer Contests, and they also have the subunit STUDIO which focuses on performance techniques. However, most of them aren't included in the main single lineups, which are based on popularity, and they're usually given a B-side instead.

** They covered Music/Hinatazaka46's "Kyun" during their appearance on ''Music Blood'', following a series of incidents where a sizable number of Hinatazaka fans became interested in [=STU48=] after being randomly redirected to the Showroom live streams of [=STU48=] members.

* CoverVersion: 48 Group songs are a given, including the Hiroshima dialect version of "Kimi no Koto ga Suki Dakara", "Kimi no Koto ga Suki Jakee". The second original stage play includes "Teokure Caution" by =LOVE, a group produced by former member Sashihara Rino.

* LoveTriangle: "Which is which?" is about two best friends who like the same guy, or {{Triang Relation|s}} Type 9.

* {{Arcadia}}: Their music videos [[SceneryPorn showcase the idyllic countryside]] of Setouchi with its rustic shops and beaches. Even their official profile photos were taken outdoors with the sea as background, unlike those of their sister groups which were taken in a studio.

** They released a collaborative merch series with the Hiroshima Toyo Carp baseball club in 2022, with their sea blue color instead of the club's signature red. It became one of the costumes for their fifth anniversary concert that year.

** They released a collaborative merch series with the Hiroshima Toyo Carp baseball club in 2022, with their sea blue color instead of the club's signature red.

* NonAppearingTitle: The actual phrase "Hana wa Dare no Mono?" is not part of the song's lyrics.

* BirthdayBuddies: Akari Fukuda, Riko Kudo, and Yayoi Nakahiro share the same birthday (March 29), but Fukuchan is three years older than the other two (born 1999).

* ProductPlacement: The group is co-owned by the Setouchi Destination Marketing Organization and has many TV shows and activities to promote Setouchi tourism in both domestic and overseas markets. They have ''two'' subunits directly related to tourism. This is also why their [=MVs=] are full of Setouchi SceneryPorn.

* FlashbackEcho: In the "Omoidaseru Koi wo Shiyou" MV, the 1st generation and 3rd Draft members are adults having a reunion at their old high school, and there are flashbacks to their student days where they're portrayed by the 2nd generation members. Of course, centers Takino Yumiko and Rissen Momoka portrayed the main character.

** It was released along with a short movie about three friends, portrayed by the centers, who fight because Yumiko decides to join the photography club instead of the choir club like Chiho and Mai, and make up when [[spoiler:Yumiko and her club offer to document the choir club's performance, after the contest they were going to participate in was cancelled due to the UsefulNotes/COVID19Pandemic. Yumiko also reveals that she's suffering from [[CareerEndingInjury partial deafness]] and had planned to join the club if she recovered]].

** Morokuzu Noa previously went by Mitsuki Noa, and presumably assumed her stage name to avoid confusion with the captain. By the way, Morokuzu (諸葛) is read as "Zhuge" in Chinese, as in Zhuge Liang.

[[caption-width-right:350:[=STU48=] and the ''[=STU48=]-go'']]

* ItRunsInTheFamily: Rissen Momoka is the younger sister of AKB member Rissen Airi. Yabushita Fu's sister is former NMB member Yabushita Shu.

* LoveMakesYouCrazy: "Soshite Boku ha Boku Janaku Naru" ("Then I'm No Longer Me") is about how obsessive love causes one to slowly lose sanity.

* TriangRelations: "Which is Which?" is about a Type 9.

* ProtestSong: "Hana wa Dare no Mono?" ("To Whom Does The Flower Belong?") imagines a world without borders, where people won't have to fight over "flowers in the wasteland". It was released along with a short movie about three friends, portrayed by the centers, who fight because Yumiko decides to join the photography club instead of the choir club like Chiho and Mai, and make up when [[spoiler:Yumiko and her club offer to document the choir club's performance, after the contest they were going to participate in was cancelled due to the UsefulNotes/COVID19Pandemic. Yumiko also reveals that she's suffering from [[CareerEndingInjury partial deafness]] and had planned to join the club if she recovered]].