Saki Mizushima

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Saki Mizushima
SideM character data
Name: 水嶋咲 (Mizushima Saki)
Voice actor: 小林大紀 (Kobayashi Daiki)
Age: 18
Height: 160 cm
Weight: 48 kg
Shoe Size: 24 cm
Birthday: August 19th
Blood Type: B
Hobbies: Magic tricks
Skills: Doing handstands
Writing Hand: Right
Horoscope: Leo
Hometown: Chiba
Ex-Job: Maid
Card Type: Physical
Image Color:     
Saki sig.png

Saki Mizushima (水嶋咲 Mizushima Saki) is one of the available idols in the mobile game THE iDOLM@STER: SideM. He is voiced by Daiki Kobayashi (小林大紀 Kobayashi Daiki).


SideM Biography

-I'll deliver a papi smile★-
"Hi, hi! Saki Mizushima makes a papi appearance☆ Please call me Saki! Saki-chan or Saki-pyon are both fine, too~! I'll try to get along, Producer♪"


Lover of all things cute, Saki is the cute crossdressing maid who wants to express his true self. He is cheerful and upbeat, always friendly to others. Saki is assertive and doesn’t let rude people just get their way. His catchphrase is ‘papi’, which is used as an adverb, adjective, or just tacked onto the end of a sentence in a bright, high-tension manner. Saki’s best friend is Makio Uzuki, who he calls 'Roll'.

Saki doesn’t care about what others think of his gender, because being happy with himself is what’s most important. He considers his crossdressing self to be his true self, refusing to show his face without makeup, as it would cause issues with his family and classmates who do not know of his idol or waiter(ess) work. He looks up to Ryo Akizuki, who was a former crossdresser working at 876 Production before defecting to 315 Production as a fully fledged male idol. He is very familiar with girly things like makeup, keeping up with brands, and likes to go out shopping. Because his father is strict about him having to be masculine, he keeps his idol persona a secret from his schoolmates and family. Often, people ask him about his gender, but to him, it doesn’t matter because being himself, being loved, and doing his best is what’s most important. Generally, he doesn't believe gender should restrict him of things so he doesn’t mind working in an all-male talent agency as long he can wear cute outfits.

Saki believes his entrance to 315 Productions was fate. Lost in the rain on the way home, Makio approached him and offered help. He brought Saki back to the cafe he works at, Café Parade, to keep him sheltered. After seeing how cute the cafe was and how nice the workers were, Saki decided to work there with him, and eventually become an idol. He loves being an idol, and working at Cafe Parade, because there he feels accepted as his true and "ideal" self.

Game Discography

Song Discography

Image songs

Favorite ni Odorasete

Recorded Solo Songs

Recorded Group Songs

Trivia and Fan Culture


  • Saki is the second crossdressing male idol after Ryo Akizuki.
  • During the “Long Night ~Hotel of Nightmares~“ event, it was revealed that Saki has one brother.
  • Saki’s “Ice Decoration” event SR from Live on St@ge! features four bear-shaped cookies that represent each member of Café Parade.
  • In a kizuna line in Live on St@ge, Saki has expressed a desire to preform a magic show with Kaoru Sakuraba.

Fan Culture

Character Gallery

SideM Cards