Oshima Ryoka, 2015
|Birthdate||October 21, 1998|
|Occupation||Singer, Idol, Actress|
|Generation||13th Generation AKB48|
|Associated Acts||AKB48, SKE48, NMB48, HKT48, Nogizaka46, SNH48, JKT48|
- Favorite foods: Tomatoes, strawberries, ramen
- Favorite drink: Tea
- Favorite colors: Yellow & pink
September 24: Passed AKB48's 13th generation audution.
December 8: Performing Aitakatta with all of AKB48's 13th gen member as Debut in AKB48 6th Theater Anniversary Concert
July 3: Being member of Yokoyama Team A
- NEW SHIP (GIVE ME FIVE!)
- Ano Hi no Fuurin (Gingham Check)
- Tsugi no Season (UZA)
- Kodoku na Hoshizora (UZA)
- Watashitachi no Reason (Eien Pressure)
- Ruby (So long!)
- Waiting Room (So long!)
- Bara no Kajitsu (Sayonara Crawl)
- Ikiru koto (Sayonara Crawl)
- Kiss made Countdown (Heart Electric)
- Himitsu no Diary (Mae Shika Mukanee)
- B Garden (Labrador Retriever)
- Chewing Gum no Aji ga Naku Naru Made (Kokoro no Placard)
- Loneliness Club (Kibouteki Refrain)
- Yankee Rock (Green Flash)
- Summer side (Bokutachi wa Tatakawanai)
- Kimi wo Kimi wo Kimi wo... (Kuchibiru ni Be My Baby)
- Kin no Hane wo Motsu Hito yo (Kuchibiru ni Be My Baby)
- LA LA LA Message (Kimi wa Melody)
- Koi wo Suru to Baka wo Miru (Tsubasa wa Iranai)
- Kokoro no Hashi no Sofa
- Skirt, Hirari
- Tenshi no Shippo
- Tsundere (new unit)
B3 (Pajama Drive)
- Pajama Drive (revival)
Concert Shuffle Units
Gyomu Renraku. Tanomuzo, Katayama Bucho! in Saitama Super Arena
- Nagisa no CHERRY
AKB48 in TOKYO DOME ~1830m no Yume~
- Ame no Doubutsuen
AKB48 Kouhaku Utagassen 2012
- Ame no Doubutsuen
Unit Matsuri 2013
- Nage Kiss de Uchi Otose!
AKB48 8th Anniversary
AKB48 Kouhaku Utagassen 2013
- Kimi Dake ni Chu! Chu! Chu!
AKB48 Request Hour Setlist Best 200 2014
- Seifuku Ressistance
AKB48 Zenkoku Tour 2014 Shiga
- Blue rose
- Shuumatsu Not yet
- Blue rose
- She was promoted on the Tokyo Dome team shuffle.
- Her desired job is to be an actress who can work in varied kinds of dramas.
- The member she admires the most is Oshima Yuko.
- Her height was 145cm on her 1st promotional interview which she considers as her "charm point".
- She was named the "ace" of the 13th generation.
- Considered the leader of the ksgk (kusogaki, "annoying kids"). The ksgk also includes Kawaei Rina, Tano Yuka, and Takahashi Juri.
- She loves to play pranks.
- She is very close with fellow 13th generation member Aigasa Moe. They went to elementary school together, and were best friends for four years before auditioning for AKB48.
- Both used to dance Oogoe Diamond together and pretend to be AKB48 members.
|Members||Iwasa Misaki | Uchida Mayumi | Uchiyama Natsuki | Umeta Ayano | Oshima Ryoka (Co-Captain) | Kashiwagi Yuki | Kato Rena | Kizaki Yuria (Captain) | Kuramochi Asuka | Gotou Moe | Kobayashi Kana | Kobayashi Marina | Sakaguchi Nagisa | Takeuchi Miyu | Tanabe Miku | Fukuoka Seina | Yabuki Nako (HKT48's Team H) | Nozawa Rena | Hashimoto Hikari | Hirata Rina | Fukuoka Seina | Yokoshima Aeri | Watanabe Mayu | Watanabe Miyuki (NMB48's Team BII) ||
|Stages||B1 | B2 | B3 | B4 | B5 | Waiting Stage | B6|