Rutricha Phapakithi (; born 23 September 1999), formerly Apichaya Saejung (), nicknamed Ciize (), is a Thai actress and singer. She is a former member of the girl group Sizzy under Riser Music. She gained recognition for her performances in various television series, including YOUniverse (2018), 23.5 (2024), Pluto (2024), and Enemies with Benefits (2026).
Names Rutricha was born in Bangkok, Thailand as Apichaya Saejung. In July 2023, she announced on Twitter that she was changing her legal name to Rutricha Phapakithi as someone has the exact same birth name as her.
She is of Thai Chinese descent. Her Chinese name is Zeng Xishi ().
Education Rutricha graduated from Satriwitthaya 2 School and went on to Bangkok University where she graduated with a bachelor's degree in business Chinese in 2022.
Career In 2015, Rutricha made her acting debut with the television series Wonder Teacher where she played a supporting role of Cherry. She later went on to play various roles in several television series, including as May in Kiss: The Series (2016) and Mochi in My Dear Loser: Edge of 17 (2017).
In 2018, she landed her first main role as Nik, in the web series YOUniverse alongside Wachirawit Ruangwiwat. In the same year, she played as Ching in 'Cause You're My Boy.
In 2019, she portrayed Onnie, Smile's (Sananthachat Thanapatpisal) bestfriend in Boy For Rent. She also played as New Year, a high school student who dies from a hate gift in A Gift For Whom You Hate.
In the meantime, she signed under GMMTV and debuted as an idol under Sizzy (formerly known as Sissy) in November 2019, before they officially disbanded in October 2024.
In 2020, she portrayed Lyla in Who Are You and Pang in Tonhon Chonlatee.
In 2021, she played as Thong Hansa, the daughter of the village chief who's a rival to Lookpat (Wannarot Sonthichai) in The Prince Who Turns into a Frog. In the same year, she got the main role of Nan, a social media addict who often feels inferior to Papang (Sarunchana Apisamaimongkol) in the mystery teen miniseries The Comments. She also played as Cin, Wisa's (Phatchatorn Thanawat) personal assistant in 46 Days. She later appeared in several television series.
In 2024, she appeared in Beauty Newbie. Then she received recognition after portraying Alpha, a student council president who excels in academic, also an older sister of Ongsa (Pansa Vosbein) in the Thai girls' love television series 23.5. In the same year, she played as Fai in We Are and as Rak in Peaceful Property.
She also gained wider recognition for portraying Pang, Ai-oon's (Tipnaree Weerawatnodom) friend who involves in a messy love triangle with Pim (Ploynira Hiruntaveesin) and Jan (Preeyaphat Lawsuwansiri) in the 2024 girls' love television series Pluto. She later played as Baifern, Po's (Supha Sangaworawong) friend who's fangirling over MARS (LYKN) in ThamePo: Heart That Skips a Beat. In the meantime, she appeared in various music videos.
In 2025, she went viral for her speaking skills in three languages (Thai, English, Chinese) when she serves as the event host in Chuang Busking Day, an event where showcasing the trainees of Chuang Asia: Season 2. In the same year, she played as Jin in Boys in Love.
Filmography Television series Year Title Role Notes 2015 Wonder Teacher CherrySupporting role 2016 Kiss: The Series May Lovey Dovey Koi 2017 Water Boyy Namkhaeng My Dear Loser: Edge of 17 Mochi Teenage Mom: The Series Mint 2018 YOUniverse Nik Main role 'Cause You're My Boy ChingSupporting role 2019 Boy For Rent Onnie A Gift For Whom You Hate New Year 2020 Who Are You Lyla RojkijaSupporting role Tonhon Chonlatee Pang 2021 The Prince Who Turns into a Frog Thong Hansa The Comments Nan Main role 46 Days CinSupporting role 2022 Star & Sky: Star in My Mind Tingting Mama Gogo Fifa The Warp Effect Liu2024 Beauty Newbie Milin Guest role 23.5 AlphaSupporting role We Are Fai Peaceful Property Rak Guest role Pluto PangSupporting role ThamePo: Heart That Skips a Beat Baifern 2025Boys in Love Jin Revamp The Undead Story Mariah Guest role 2026Girl Rules AirySupporting role Enemies With Benefits Proud TBA Lalil
Television show YearTitleNetworkNotesRef.2018–2019#TEAMGIRLGMM 25
Music video appearances Year Title Artist 2012 "คิดถึงได้ไหม" MIN 2017 "พรุ่งนี้ทุกวัน" (Water Boyy OST) Chatchawit Techarukpong (Victor)2018 "จักรวาลเธอ" (YOUniverse) (YOUniverse OST) Korapat Kirdpan (Nanon) "L.O.V.E." (#PLAY2project) Paradox 2019 "กุหลาบพิษ" (A Gift For Whom You Hate OST) Paper Planes x Oui Buddha Bless 2023 "Safe Zone" (The Warp Effect OST) Harit Cheewagaroon (Sing)2025 "แค่เธอไม่รัก" (LOVE LEFT ME BEHIND) Rathavit Kijworalak (Plan) ft. NICECNX, MIGBIZZY "ผิดแผน" (FOUL) Kantapon Jindataweephol (Offroad) ft. SMEW "Wondering" BamBam
Discography
Soundtrack appearances YearTitleSoundtrackLabelRef. 2022"ว่างอยู่ (Available)"with Jan Ployshompoo Mama Gogo OST GMMTV Records 2026"ไม่ชอบเลยที่ชอบเธอ (I don’t like that I like you)"with Kapook PloyniraEnemies with Benefits OST
Concerts Title Date Venue Notes Ref. Get Rising to RISER May 5, 2023 Centralworld, Square A With Krist, Bright, Nanon, Sizzy, LYKN Blush Blossom Fan Fest: Midnight Bloom June 13–14, 2026 BITEC LIVE With Kapook, Milk, Love, Namtan, Film, Emi, Bonnie, View, Mim, Jan, JingJing, June, Mewnich, Pahn, Fond Blush Blossom Fan Fest: Midnight Bloom in Macau October 24, 2026 Fisherman’s Wharf Convention & Exhibition Center With Kapook, Milk, Love, Namtan, Film, Emi, Bonnie, View, Mim, Jan, JingJing, Pahn, Fond Blush Blossom Fan Fest: Midnight Bloom in Kaohsiung November 7, 2026 Kaohsiung Music Center
Awards Year Award Category Work Result 2020 Zoom Dara Awards 2020 Popular Single "เปลี่ยนคะแนนเป็นแฟนได้ไหม" (Love Score) by Sizzy x Nanon 2021Kazz Awards 2021Popular Young Woman of The Year Female Teenage of the Year
References
External links