Choco is a serious and steady person. She is not good at drawing and singing. Mimi is her childhood friend and they get along together well. She likes Andrew and she has 2 younger brothers, one in year 6 and the other in year 7.
Mimi likes to work at her own pace. She's a mother's girl. Mumu-chan is her favourite (maybe) but also her rival. If Choco was a boy, then she would be Mimi's ideal boyfriend. She has a doting father.
Though Andrew looks like he's a serious person, he has random moments of delusions (which are pretty weird xD). He loves Piccho his little bird and likes Choco.
Mumu is rich and has a devilish personality. Even though is face is cute, he is a boy. It seems he has an older sister studying in Australia (?) He has pink hair.
His nickname "mika" is from the word man (?) Prince. Nature. When he does something weird (more like maniacal xD) Choco and Mimi feel very confused.