The shortest heroine and the tsundere in her circle of friends has a crush on Io. Every time when Io gives Tsumiki a pat on the head or sees something she likes, her hair changes shape into cat ears. Tsumiki is also left-handed.

Everyone has a circle of friends they hang out with. But even within a small group there are smaller groups of friends, best friends and, here's where it gets complicated, boyfriends and girlfriends. Sometimes relationships just develop in a way where you're not exactly sure what you are to the other person. Which is the problem Tsumiki has when it comes to Io. Io's as tall and easygoing as Tsumiki is short in both temper and stature, but he also seems to be totally clueless about how she's starting to feel. Yet, at times, he's almost too affectionate. It's just confusing and irritating. And their prankster friends Mayoi and Sakaki aren't much help. Especially Mayoi, as it gives her one more thing to tease Tsumiki over. Hime, the fifth member of their usual gang of five isn't much better, because she's not really well connected to reality anyway. Which leaves Tsumiki stuck in a quandary. Are she and Io just best friends? And is it worth risking that for what Tsumiki wants?<br><br>
(Source: Sentai Filmworks)

__Current Residence:__ Tokyo, Japan
__Height:__ 150.3 cm
__Hobbies and Abilities:__ fashion, shopping, memorization
__Agency:__ 81 Produce

[Profile (81 Produce)](https://www.81produce.co.jp/actor_search/index.php/item?id=169) | [Twitter](https://twitter.com/rumirumi_81pro) | [Instagram](https://www.instagram.com/rumirumi_81/) | [Blog](http://ameblo.jp/rumiokubo/) | [Web Diary](http://gree.jp/ookubo_rumi) | [Anison](http://anison.info/data/person/30941.html) | [Facebook](https://www.facebook.com/OkuboRumi927) | [Wiki (en)](https://en.wikipedia.org/wiki/Rumi_Okubo) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E5%A4%A7%E4%B9%85%E4%BF%9D%E7%91%A0%E7%BE%8E)

She was discovered in 81 Produce's 3rd Seiyuu Audition in August, 2009, becoming one of the seven finalists amongst 1,109 who took initially part and won the excellence prize in the end. She made her debut in a minor role for the anime [Sasameki Koto](https://anilist.co/anime/6203).

(Source: AniDB)

__Non-anime roles:__
- Ami Aiba in "Digimon Story: Cyber Sleuth" (VG)
- Arin in "Fairy Fencer F" (VG)
- Elizabeth Bathory in "Fate/Grand Order" (VG)
- Female Protagonist in "Digimonstory Cybersleuth" (VG)
- Isto in "ToHeart2 Dungeon Travelers 2" (VG)
- Lancer in "Fate/Extra CCC" (VG)
- Little Red Riding Hood in "Kongokutou Mary Skelter" (VG)
- Lunalu in "Granlue Fantasy" (VG)
- Mayuka Morimoto in "Chou Ginga Sendan -Infinity-" (VG)
- Misaki Shinoyama in "Star Horse Pocket" (VG)
- Rider (Astolfo) in "Fate/Grand Order" (VG)
- Tia in "Goddess of Victory: Nikke" (VG)

Unaired episode 13 of Acchi Kocchi that was included in Vol.6. 

Wouldn't you just love to poke in a relationship between two young high schoolers who have a subtle distance between each other? Of course you would. Tsumiki and Io have this subtle distance that anyone would want to jump in between just to bug them. That's what the other characters are there for. Tsumiki, being a tsundere and all, won't be honest about her feelings toward Io. Io on the other hand is unaware of Tsumiki's feelings, hence the subtle distance between the two. Now, let's watch these two and see what events await them...


One-minute long Acchi Kocchi specials that aired at the end of each eps.  It was released on the BD/DVD discs of the series as clean ver. later. 

Tsumiki Miniwa