Aries · by personality
Oshi no Ko · Hoshino family, B-Komachi
Ruby Hoshino: zodiac sign and birth chart
Ruby Hoshino has no canon birthday. Neither the manga nor the anime gives an exact one. Read from her personality, she's an Aries: Sun, Moon and rising all in the same sign, loud, bright and first onto the stage. She says it big, and she puts in the work for the people she loves.
- SunAries
- MoonAries
- RisingAries
SourceNo canon birthday: neither the manga nor the anime gives Ruby a date. The chart is NEBO's take, read from personality.
Birth chart
Ruby's chart at a glance
No canon birthday, so this is NEBO's take, read from her character.
- Fire3
- Earth0
- Air0
- Water0
- Mostly fire. 3 of her 3 placements are fire signs.
- Double Aries. Sun and Moon in the same sign, about 1 in 12 people have that.
- About 1 in 14 birthdays get Ruby in the app's Oshi no Ko world.
- Other Ariess here: Ichigo Saito.
NEBO's take
No birthday in canon. Her personality says Aries.
We ran Ruby through the same model that matches people to characters in the app, and looked at which chart gets her most often. It reads her as fire first: a performer who steps in and glows, with Aries speed in the Sun, Moon and rising.
Canon
No canon birthdayNever given in the manga or animeNEBO's take
Aries SunRead from her personality- Sun
CanonNot in canonNEBO's takeAries
Aries wants the stage first. She grows up singing her mom's songs into the mirror.
- Moon
CanonNot in canonNEBO's takeAries
An Aries Moon feels first and fast. Her emotions come out in a burst.
- Rising
CanonNo birth timeNEBO's takeAries
No birth time in canon. First impression: an eager, bright girl who walks in like she already owns the room.
- Mercury CanonNot in canonNEBO's takeNo clear pick
- Venus CanonNot in canonNEBO's takeNo clear pick
- Mars
CanonNot in canonNEBO's takeNo clear pick
Our model has no clear pick for her Mars. Judge by behavior: she keeps going for the dream through everything.
What canon does give: a girl who sings her mom's songs into the mirror and wants the stage. An Aries answer is to run at it, right into the spotlight.
How she shows up
Why she's like this
Aries is the sign of the first step, courage and a bright spark. Ruby hits every one of them, in scenes fans know by heart.
CoreAries Sun
Born for the stage
She grows up singing her mom's songs into the mirror.
Season 1
FeelingsAries Moon
Honest burst
Ruby steps on stage and glows so hard the crowd takes a moment to work out what exactly hit them.
Idol arc
Your turn
Which Oshi no Ko character are you?
Pick your birthday. Your Sun sign gives a first answer right here, then the app reads your whole chart.
Aries girls get Ruby Hoshino most often. Aries guys get Ichigo Saito.
You and Ruby: Same sign. You'd get each other without trying.
Taurus girls get Miyako Saito most often. Taurus guys get Aqua Hoshino.
You and Ruby: Next-door signs. Different instincts, lots to learn.
Gemini girls get MEM-cho most often. Gemini guys get Masaya Kaburagi.
You and Ruby: Signs that cheer each other on. Good team.
Cancer girls get Kana Arima most often. Cancer guys get Sakuya Kamoshida.
You and Ruby: Signs at a right angle. Friction, the useful kind.
Leo girls get Ruby Hoshino most often. Leo guys get Melt Narushima.
You and Ruby: Same element, fire. Easy chemistry, same pace.
Virgo girls get Abiko Samejima most often. Virgo guys get Aqua Hoshino.
You and Ruby: Signs that speak different languages. Curious mix.
Libra girls get Akane Kurokawa most often. Libra guys get Masaya Kaburagi.
You and Ruby: Opposite signs. You see each other's blind spot.
Scorpio girls get Ai Hoshino most often. Scorpio guys get Gorou Amamiya.
You and Ruby: Signs that speak different languages. Curious mix.
Sagittarius girls get Frill Shiranui most often. Sagittarius guys get Pieyon.
You and Ruby: Same element, fire. Easy chemistry, same pace.
Capricorn girls get Miyako Saito most often. Capricorn guys get Ichigo Saito.
You and Ruby: Signs at a right angle. Friction, the useful kind.
Aquarius girls get Abiko Samejima most often. Aquarius guys get Aqua Hoshino.
You and Ruby: Signs that cheer each other on. Good team.
Pisces girls get Kana Arima most often. Pisces guys get Sakuya Kamoshida.
You and Ruby: Next-door signs. Different instincts, lots to learn.
That's your Sun sign talking. The app reads your Moon, Venus, Mars and the rest, and the answer can change.
Get my real Oshi no Ko character→Chemistry
Who Ruby clicks with, and who she clashes with
Read from the charts on their pages. The plot may disagree.
Clicks with
- Melt NarushimaAries Moon+Sagittarius MoonMoons in the same element: they calm down the same way, no translation needed.
- Taiki HimekawaAries Sun+Leo SunSuns in the same element: they want the same things and go after them the same way.
- MEM-choAries Sun+Gemini MoonSun and Moon in friendly signs: they bring out each other's good side.
Clashes with
Pick a side
Are you more Ruby or Ai?
Your birthday settles it. The app reads your whole chart and tells you who you really get.
Similar charts
Who else has Ruby's chart
Famous Aries with her placements
Their charts line up with NEBO's take on Ruby. A chart match only: none of them is connected to this page.
Characters like her in other worlds
Same chart pattern in our model, different universe.
Oshi no Ko
Characters like Ruby
Closest charts first: shared signs, same elements.
- Ichigo SaitoAries Sun · Capricorn Moon
- PieyonSagittarius Sun · Virgo Moon
- Melt NarushimaLeo Sun · Sagittarius Moon
- Ai HoshinoScorpio Sun · Leo Moon
- Taiki HimekawaLeo Sun · Sagittarius Moon
- Frill ShiranuiSagittarius Sun · Capricorn Moon
- Aqua HoshinoTaurus Sun · Taurus Moon
- Kana ArimaPisces Sun · Pisces Moon
Which Oshi no Ko character are you?
Add your birthday and the app finds your Oshi no Ko character, your place in B-Komachi and how close you are to Ruby.
Are you Ruby? Find your character→Questions
Ruby's zodiac sign: what people ask
What zodiac sign is Ruby Hoshino?
Canon never says. Neither the manga nor the anime gives Ruby an exact birthday. By personality, NEBO's take is Aries.
When is Ruby Hoshino's birthday?
It isn't given anywhere in canon as an exact date.
Is Ruby Hoshino an Aries?
By personality, yes: bright, bold and first onto the stage. It's NEBO's take, not canon, because no exact birthday exists.
What element is Ruby?
Fire. Aries is a fire sign, and 3 of her 3 placements are fire too.
Who is Ruby most compatible with?
By chart, Melt Narushima, Taiki Himekawa and MEM-cho. Aries Moon and Sagittarius Moon: they calm down the same way, no translation needed.
Unofficial fan page. Oshi no Ko and its characters belong to their respective owners. NEBO is for entertainment.
NEBO is for entertainment and self-reflection, not medical, psychological or financial advice.
TermsPrivacyImpressumCelebrity birth chartsZodiac signsFandom charactersZodiac compatibility2027 HoroscopeCelebrity birthdays© 2026 NEBO LABS LLC

.jpg)