Sakaguchi Riko was a member of HKT48's Team H.
Catchphrase
- 福岡県出身、高校3年生30歳のりこぴこと坂口理子です
Team History
- 2012.09.23 - Joined HKT48 as a Kenkyuusei
- 2014.01.11 - Promoted to Team H (HKT48 Team Shuffle)
- 2022.12.05 - Graduated from HKT48's Team H (Announcement: September 23, 2022 | Final Theater Performance: December 5, 2022)
AKB48 Senbatsu Elections
- 5th Senbatsu Election - Not Ranked
- 6th Senbatsu Election - #60 (Future Girls)
- 7th Senbatsu Election - #37 (Next Girls)
- 8th Senbatsu Election - #59 (Future Girls)
- 9th Senbatsu Election - #49 (Future Girls Center)
- 10th Senbatsu Election - #114
Singles Participation
HKT48 A-Sides
HKT48 B-Sides
AKB48 B-Sides
- Seikaku ga Warui Onna no Ko (Kokoro no Placard)
- Otona Ressha (Green Flash)
- Mizu no Naka no Dendouritsu (Halloween Night)
- Make noise (Kimi wa Melody)
- Kishi ga Mieru Umi Kara (LOVE TRIP / Shiawase wo Wakenasai)
- Anogoro no Gohyaku Yen Dama (Negaigoto no Mochigusare)
- Jibuntachi no Koi ni Kagitte (#SukiNanda) (Center)
- Kimi wa Boku no Kaze (Teacher Teacher)
Albums Participation
HKT48 Albums
- Bokura no Stand By Me (092)
- HAKATA Kyuuketsuki (Outstanding)
- Omoide ni Suru ni wa Mada Hayasugiru (Outstanding)
Units
Blueberry Pie
- Watashi wa Blueberry Pie
- Daite Twintails
Stage Units
- RS2 (PARTY ga Hajimaru yo)
- Kiss wa Dame yo
- Anata to Christmas Eve
- RS3 (Nounai Paradise)
- Kimi wa Pegasus
- HW1 (Pajama Drive)
- Junjou Shugi
- Kagami no Naka no Jean Da Arc
- Pajama Drive
- Temodemo no Namida
- H2 (Seishun Girls)
- Ame no Doubutsuen
- Blue rose
- Fushidara na Natsu
- Cinderella wa Damasarenai
- H3 (Saishuu Bell ga naru)
- Return Match
- Oshibe to Meshibe to Yoru no Chouchou
- Gomen ne Jewel
- Hatsukoi Dorobou
- KIV1 (Theater no Megami)
- Arashi no Yoru ni wa (Support)
- HW2 (Tadaima Renaichuu)
- Faint
- 7ji 12fun no Hatsukoi
- Haru ga Kuru Made
- Junai no Crescendo
- H4 (Theater no Megami)
- Locker Room Boy
- Arashi no Yoru ni wa
- Hatsukoi yo, Konnichiwa
- Candy
- Yokaze no Shiwaza
- HW3 (Yuuwaku no Garter)
- Jajauma Lady
- KIV2 (Saishuu Bell ga naru)
- Return Match (Support)
- Oshibe to Meshibe to Yoru no Chouchou (Support)
- KIV3 (Seifuku no Me)
- Onna no Ko no Dairokkan (Support)
- H5 (RESET)
- Kiseki wa Ma ni Awanai
- Kokoro no Hashi no Sofa
- Seifuku Resistance
- Ashita no Tame ni Kiss wo
- R24 (Hakata Refresh)
- Zipper
- Yaban na Kyuuai
Concert Units
AKB48 Group Kenkyuusei Concert ~Oshimen Hayai Mono Gachi~
HKT48 2nd Anniversary
HKT48 Kyushu 7 Prefecture Tour ~Kawaii Ko ni wa Tabi wo Saseyo~
- Oita Iichiko Grand Theater
- Kagoshima Shimin Bunka Hall
AKB48 Kouhaku Utagassen 2014
HKT48 3rd anniversary
HKT48 National Tour ~Zenkoku Toitsu Owatoranken~
- Japanese Locations
- Yokohama Arena
- Flower
- Kimi Dake ni Chu! Chu! Chu!
- Daite Twintails
HKT48 4th Anniversary
HKT48 Spring Live Tour ~Sashiko du Soleil 2016~
- Mail no Namida
- 1994-nen no Raimei
HKT48 LIVE TOUR 2022 ~Under the Spotlight~
- Yokosuka Arts Grand Theater
- YONA YONA DANCE
- Aichi Prefectural Art
- Tenbyou no Uta (duet with Ishibashi Ibuki)
Media Appearances
Stage Plays & Musicals
- AKB49 ~Renai Kinshi Jourei~ The Musical
- HKT48 Sashihara Rino Zachou Kouen at Meijiza
Movies
- Tsunagirl (2013)
Variety Shows
- KoreKara
- HKT Variety 48
- HKT48 no Odekake
- HKT48 Shakariki 48!
- HKT48 no Goboten!
- HKT48 no "Hokamina" ~Sonohoka no minasan~
Etymology
- Sakaguchi means "slope, hill" (坂) (saka) and "mouth, entrance" (口) (kuchi/guchi).
- Riko means "reason, logic" (理) (ri) and "child" (子) (ko).
Trivia
- Hobbies: People-watching, Playing with her dog
- Special skill: Impressions
- Charm point: Amiability
- Often jokes around with her Sexy-talento act
- Member of the official HKT48 sub-unit Blueberry Pie
- Oldest member of HKT48
- Part of the unofficial sub-unit "Imomu-chu!"(いもむchu!) which consists of her and her very good friends in HKT48: Goto Izumi, Tomiyoshi Asuka and Komada Hiroka, along with Tani Marika as a kenkyuusei member.
- Member of Marathon Club
- Announced her marriage to a regular man on July 25, 2024