Kotoha Aoyama

One of the three members of "Colors." She loves spending her time playing video games and solving cases and mysteries prepared by "Pops." She is the one that tries the hardest to solve the cases and comes with the smartest ideas among the three members.

[Spoiler] It is actually revealed later on that she is incredibly bad at video games even though she is always playing them. She gets gloomy when she realizes it after Sacchan and Yui point it out. [/Spoiler]