|Japanese Name||御庭 つみき|
|Romanized Name||Miniwa Tsumiki|
|English Name||Tsumiki Miniwa|
Tsumiki somewhat resembles a cat, as her hair itself takes the form of cat ears when she sees something she likes (usually Io). Tsumiki also displays an unusual level of strength for her size, often demonstrating it at Mayoi's expense. She is skilled at videogames, cooking and academics. Tsumiki has a long purplish-blue hair that almost reaches her feet, always tied up with a big white band, with a long curly ahoge sticking out on her head. She also has violet eyes, and is petite and dainty in stature. She is mostly seen wearing her school uniform.
In the manga, Tsumiki's appearance changes vastly, as she lacks the long ahoge sticking out of her head, and is much shorter. Also, her long hairstyle is slightly different from the anime version.
Tsumiki has the personality of a typical tsundere, as noted by Mayoi. She is slightly cold to others and does not speak much, though she actually cares about her family members and friends a lot. Tsumiki has a gigantic crush on Io, though he never notices it. She is shown to be a good cook and smart student, placing first in class ranks in terms of academics.
Tsumiki is often short-tempered towards Mayoi, who often teases her about her feelings for Io, which would more often than not results in heavy mental punishments or physical attacks. When Io is confused about her advances and makes her feel embarassed, she would bite him on the head.
She acts even more like a tsundere in the manga, where she often strikes Mayoi over mild teasings and seemed to bite Io's head a lot more than she did in the anime.
- Io Otonashi - Io is the target of Tsumiki's intense crush, though he almost always fails to see the signs, even when Mayoi teases both of them about it, much to her dismay and frustration. Despite this, Io's attitude and disposition towards her was a lot friendlier than towards other characters. Io thinks Tsumiki is cute, and would often give her a pat on the head in the anime, which she enjoys greatly.
- Mayoi Katase - Mayoi would often tease Tsumiki about her crush on Io, which, more often than not, would earn her a devastating blow from the former. However, they both cared about each other and are always seen hanging out.
- Hime Haruno - Hime is Tsumiki's close friend, whom she always seem to be around. Hime is one of the few people who have never (purposefully) teased Tsumiki about her crush on Io, thus makes her much less of a target than the runny-mouthed Mayoi, though at time in the manga Tsumiki have threatened to hit her and have "squished" Hime's face when she found out that Hime was hiding Io's part-time job.
- Sakaki Inui - Sakaki would often hang out with Tsumiki, though the two did not really share any interactions with each other, as Sakaki is more commonly seen around Mayoi. Sakaki knew about Tsumiki's crush on Io, and would sometimes offer help by "persuading" the emotionally-dense Io to go out with her.
- Tsumiki is often mistaken for Konata Izumi, from the famous anime and manga series Lucky Star.
|Tsumiki Miniwa - Io Otonashi - Mayoi Katase - Hime Haruno - Sakaki Inui|
|Saki Sakimori - Ami Kirino - Kikue Sakuragawa - Kyōya Saibara - Miiko Inui - Kana Miyama|