Setsuna Ogiso

A student of Class 3-A at Houjou University Attached High School. She's popular with a bright history of winning Miss Houjou Academy two years in a row, and she's the idol of the academy. She usually gets along well with others, and in some sense her attitude is harmless and inoffensive, but it's rumored that's not the real her.

She enjoys singing karaoke, which she hides from the others and only her best friends know about it. Setsuna likes singing "White Album," a song from the original White Album visual novel.

She confesses to Haruki in episode 7, and they date, although she is aware that Haruki loves Kazusa.
(Source: ANN)