|Season||Aikatsu ☀ shining over heaven|
|Aura||blue and white colored beach balls and dolphins|
|School Coord||Red Princess Coord|
Aizawa Satsuki is one of the main characters of Aikatsu ☀ shining over heaven and student of the Kaguya Academy. She is sometimes referred as the 'big sister' of young idols. Satsuki has been popular since she was a little girl. Today, she is a 25 hours-a-day idol. She is always busy.
- Name: Aizawa Satsuki
- Name in Kanji: 相沢 皐月
- Name in Hiragana: あいざわ さつき
- Name in Katakana: アイザワ サツキ
- Date of Birth: May 23rd
- Zodiac: Gemini
- Age: 14
- Gender: Female
- Attitude: Cheerful, Cool, 'Big Sister'
- Type: Cool
- Theme: #F2003C
She is sometimes referred as the 'big sister' of young idols. Satsuki has been popular since she was a little girl. Today, she is a 25 hours-a-day idol. She is always busy. Though she is busy every second of her life, she tells other idols to calm down at sometime and take a break. She cares pretty much for others, especially the 'junoir idols', as she calls them.
- Her zodiac sign is Gemini.