First appearing in episode 62, Hikaru was an idol-in-training that was assigned to learn under Kirari's wing. Initially, Hikaru resented Kirari's influence, but later learned to admire her optimistic nature. Kirari and Hikaru later team up to form the idol unit Kira☆Pika, but the pair was shortly disbanded. Hikaru continues her career as a soloist. Her childhood friend is Wataru.  (Source: Wikipedia)

Kirari Tsukishima, a gluttonous 14-year-old beauty, is a girl who does not care about idols and the entertainment world because her mind is occupied by food. Her obsession with food only causes her to be clueless about love. 
One day, after saving a turtle that is stranded in a tree, Kirari meets with a handsome and gentle boy named Seiji, who gives her ticket to a SHIPS (a popular idol group) concert to show his gratitude for her saving his pet. Kirari then storms off to the concert and runs into another boy, who tears up her ticket and warns her to stay away from Seiji because she and Seiji live in different worlds. The outraged Kirari then sneaks into the concert, only to discover that Seiji and the boy who tore her ticket, named Hiroto, are actually members of SHIPS. 
Finally understanding the meaning of "different worlds" (Seiji is a popular idol while she is an average middle school student), Kirari refuses to give up. Filled with determination to be with Seiji, she declares that she will also become an idol.

Hagiwara Mai was a member [°C-ute](https://anilist.co/staff/100551). She joined Hello! Project as one of the fifteen Hello! Project Kids. She made her debut as one of the 4KIDS featured in the Minimoni ja Movie Okashi na Daibouken! film, as well as on Minimoni's 6th single, "Genki Jirushi no Oomori Song". Hagiwara was one of the seven Hello! Project Kids who weren't placed in Berryz Koubou. In 2005, those seven members would form °C-ute. 

Nickname: Maimai, Hagitty, Mai-chan  
Birthplace: Saitama, Japan
Height: 152cm (4'11.8")
Favorite Color: Pink, light blue, orange  
Favorite Food: Strawberries, curry rice  
Least Favorite Food: Melon, watermelon, green bell peppers  
Specialty: Riding a unicycle  
Favorite Flower: Lavender  
Dislikes: Cleaning, studying  
Scared of: Cats, ghosts  
Favorite Movie: "Harry Potter," "Jurassic Park"  
Favorite Book: "Nezumi-kun no Chokki"  
Favorite Word: Daisuki (I love you/it)  
Favorite Season: Summer  
Favorite Song: Genki Jirushi no Oomori Song (Minimoni)  
Charm Point: Squishy cheeks  
Hello! Project Audition Song: Te wo Nigitte Arukitai  
Hello! Project Groups: Hello! Project Kids, 4KIDS (2002), °C-ute (2005--), Kira☆Pika (2007)    

Kirari Tsukishima is a beautiful yet gluttonous 14-year-old girl. While those around her are worshiping the popular idol duo, SHIPS, she only devotes herself to food. One day, however, Kirari, who is dense when it comes to the matters of the heart, encounters Seiji Hiwatari of SHIPS and falls in love with him at first sight. In order to be with him, she aspires to become an idol herself. With the help of SHIPS - the gentle Seiji and the bad-mouth Hiroto Kazama &ndash; and her cat mascot Naa-san, Kirari pursues the entertainment world, where she discovers that being an idol is not all fun and games, and that in order to persevere in both her love and her career, she must overcome any challenges that fortune has in store. 
 
(Source: Anime News Network)

Hikaru Mizuki