|Three Measures||78cm (Bust), 55cm (Waist), 79cm (Hips)|
|Appears in||Game and Anime|
She has an IQ of 190 and has no taste buds so everything tastes the same to her. She usually loiters in the science lab or on the school rooftop. She tends to hand in blank test sheets so she can see how the teachers will react.
To her, high school is just a game. She lives in an apartment with her father though her father is really busy with his work and rarely at home. It is implied that her cold personality is caused by her family problems.
In the AnimeEdit
In the beginning of summer vacation, Kazuki found a paper airplane that just flew out the window. Kazuki found out that the paper airplane was a marked 0 test, with Futami's name on it. Kazuki went and retrieved the failed test all the back to the science room where he found Futami looking out the window. Afterwards, she started to do experiments with Kazuki Aihara by doing romantic actions (such as kissing him) when he stumbled upon her to find out why people fall in love.
Over time, Kazuki's persistence in persuing her, she began to love him back. At the end of the anime, Kazuki was able to find Eriko on the roof tops. The two were able to confess to each other, and the two kissed.