My idol OCs part 2

Name: Mizu Sakana
Age: 15 (1st year)
Height: 1.54 cm
Measurements: B82, W57, H81
Birthday: November 21
Attribute: Pure
Colour: Lilac
Favorite Food: Grilled Fish
Hated Food: Pizza
Hobbies: Swimming, board games, singing, watching anime
Likes: Classical music, sea, tranquility, video games, anime
Dislikes: Insects
Qualities: Good singer
Flaws: Very shy, struggling to express her opinion
Others: Mizu is a girl daughter of a wealthy family. She is cute and delicate, but very shy. She is Denki's childhood friend, and always lets her make her decisions. She has been singing since she was little and her parents want her to be a singer, but she refuses due to her shyness. She is very proud of her hair. She does not admit it or tell anyone, but she is otaku.

Name: Denki Setsuzoku
Age: 15 (1st year)
Height: 1.56 cm
Measurements: B75, W59, H83
Birthday: December 18
Attribute: Smile
Colour: Oranje
Favorite Food: Fruit
Hated Food: Cream Buns
Hobbies: Dancing, repairing things
Likes: Break-dance, mechanics
Dislikes: Makeup
Qualities: Happy, active, energetic
Flaws: Doesn't think things through too much, lacks confidence
Others: Denki is a very active and happy girl. She likes mechanics and repairing electronic devices from a young age. She is Mizu's childhood friend and always makes decisions for her. Being so active leads she not to think about the consequences of her actions. She does not show it to anyone, but she has a lack of confidence and when it is important she always thinks that she will fail.

Name: Yoru Aruba
Age: 15 (1st year)
Height: 1.46 cm
Measurements: B69, W52, H74
Birthday: December 27
Attribute: Pure
Colour: Red
Favorite Food: Baubles
Hated Food: Spicy food
Hobbies: Reading idol magazines, going to the park, sunbathing
Likes: School Idols, dolls, sunny days
Dislikes: Scary stories, rain
Qualities: Cute, calm
Defects: Very, very shy, has a hard time relating to strangers, very childish
Others: Yoru is a girl who is the daughter of a Spanish father and a Japanese mother but, unlike her sister, she has always lived in Japan so she does not preserve Spanish customs. They often tell her that she is very childish since she likes little girl things and looks like one. She bumps into her sister a lot, but she loves and admires her a lot
What do you think about them? Who is your favourite?