A member of SHIPS, as well as Kirarin's love interest. Throughout the beginning of the series, he seems oblivious to Kirarin's feelings, but by episode 12 he begins to portray feelings of jealousy over Hiroto's and Kirarin's friendly relationship. He is gentle and says very encouraging words to Kirari. Since he is as dense as her, he always has a calm and clueless expression. When he is wandering around in the city, he disguises himself as an otaku.   Name Origin: &quot;hi&quot; refers to the sun, &quot;sei&quot; refers to star.  [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.

The older brother of [Stefano De Filippis](https://anilist.co/staff/147600).

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)