|School||Hanasakigawa Girls' High School|
|Favorite Food||Hot milk|
|Least Favorite Food||Celery|
|Hobbies||Playing online games|
|Kanji||明坂聡美 (until September 17th 2018)|
|Romaji||Akesaka Satomi (until September 17th 2018)|
Her hobbies are reading and playing online games, the latter through which she met her best friend, Udagawa Ako, who also calls her "Rin-rin".
Rinko has pale skin, a large bust, and big, slanted violet eyes. She has long black hair styled loosely after a hime-cut; heavy bangs across her forehead with straightened sidelocks that reach past her shoulders. Her casual attire is seen as modest with neutral colors and frilly accents. Rinko wears a white buttoned blouse with ruffles sleeves and a frilly collar tied with a black ribbon. She also wears a black knees lenght skirt, worn tightened around her waist with gold buttons down the middle and accents.
Socially awkward, Rinko is a shy and asocial girl who was initially too frightened to speak in front of others, let alone perform before them. She has a tendency to stammer when speaking, and usually keeps quiet until she feels comfortable.
When she is set on or passionate about something, she does so with conviction, like piano or online games. Rinko also tends to get excitable about said thing, to the point where when she was explaining an online game to the other Roselia members, she was speaking much more at an alarming speed.
A list of characters Rinko interacts with in the game.
|I Don't Like Crowds||1★||Score Up||Band Story 1 Chapter 1|
|Onstage||2★||Perfect Lock + Score Up|
|What Should I...?||3★||Life Recovery + Score Up|
|Pure Enthusiasm||3★||Score Up||A Song Unfinished|
|Phone-Shy||4★||Perfect Lock + Score Up||Elegant Roses Gacha|
|A Swimsuit Chosen for Me||3★||Life Recovery + Score Up||Happy Summer Vacation!|
|Quietly Worrying||2★||Score Up||Rainy Blue Rose Gacha|
|Blue-Rose Maid||2★||Life Recovery + Score Up||Cooking Class Craziness!|
|A Cute Haregi||3★||Life Dependent Score Up||Sunrise of Youthfulness Limited Gacha|
|Blue Roses in Harmony||2★||Perfect Lock + Score Up|
|Lone Wolf Wizard||4★||Score Up||Our Party's Journey - Neo Fantasy Online Gacha|
|Temporary Member||4★||Life Dependent Score Up||~Newly Composed Score~ Melodious Gacha|
|Cry of Determination||3★||Perfect Lock + Score Up||Neo-Aspect|
|Shoreside Mermaid||2★||Score Up||Shimmering Summer Water Paradise|
- Rinko types very quickly, to the point where even if she is typing out a long string of text, it'll still fly by.
- She is part of the library committee in school.
- It is revealed by Sayo in Chapter 9 of Roselia Story that Rinko has won a music contest.
- Rinko plays the fire mage class in Neo Fantasy Online, the online game she plays with Ako.
- Rinko's keyboard is a Roland FA-08.