TV ANIME: Okusama ga Seitokaicho! [MUSIC: FUGA HATORI]

ORIGINAL TITLE: おくさまが生徒会長!

MUSIC: 羽鳥風画

JAPANESE WIKIPEDIA LINK

SYNOPSIS

High school freshman Hayato Izumi lost the campaign for student council president to Ui Wakana, a girl who shocked the entire student body by promising “will remove all restrictions on campus romance” and gave away free condoms. Later that day Wakana the president-elect brought her belongings to Izumi’s residence and claimed herself his betrothed fiancée.

(Source: ANN)