 If you liked
Mitsuboshi Colors
|
 ...then you might like
Joshikousei no Mudazukai
|
Both of them have 3 main characters with almost the same characterization.
Sacchan = Baka (noisy & ridiculous)
Yui = Wota (shy)
Kotoha = Robo (serious)
You could say, Joshikousei no Mudazukai (JnM) is the high school version, Mitsuboshi Colors is the elementary school version. Although JnM has many supporting characters who are the same age & Mitsuboshi Colors usually plays outside school hours.