|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 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.
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.
Tsumiki is often short-tempered towards Mayoi, who constantly teases her about her feelings for Io. When Io gets confused about her advances and makes her feel embarassed, she bites him on the head.
She acts even more like a tsundere in the manga, where she often strikes Mayoi over mild teasings and seems to bite Io's head a lot more than she does 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 is a lot friendlier than towards other characters. Io thinks Tsumiki is cute, and often gives her a pat on the head, which she enjoys greatly.
- Mayoi Katase - Mayoi often teases Tsumiki about her crush on Io, which, more often than not, earns her a devastating blow from the former. However, they both care 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 making her much less of a target than the runny-mouthed Mayoi, though in the manga Tsumiki has threatened to hit her and "squished" Hime's face when she found out that Hime was hiding Io's part-time job.
- Sakaki Inui - Sakaki often hangs out with Tsumiki, though the two did not really share any interactions with each other, as Sakaki is more commonly seen around Io or Mayoi. Sakaki knows about Tsumiki's crush, and sometimes attempts to help by persuading the emotionally-dense Io to go out with her.
- In both anime and manga publications of the series, Tsumiki's ahoge disappears when her cat ears come up. During the entire anime she is pictured with the ahoge, however, in the manga it is not always present.
- Tsumiki displays an unusual level of strength for her size, often demonstrated at Mayoi's expense.
- She is shown to be a good cook and smart student, placing first in class ranks in terms of academics.
|Tsumiki Miniwa - Io Otonashi - Mayoi Katase - Hime Haruno - Sakaki Inui|
|Saki Sakimori - Ami Kirino - Kikue Sakuragawa - Kyōya Saibara - Miiko Inui - Kana Miyama|