Minazuki Rumi enrolled into Tokyo Arts High School has two divisions – the celebrities and ordinary division – to be an aspiring artist just like her father. Unlike other students, Rumi has no interest in celebrities nor the entertainment industry until one day she was tasked to deliver a set of notes to a classroom in the celebrity division. That’s where she met an arrogant, playboy and popular boy band, R.A.I.N, doing indecent activities at the back of the classroom. Kurosaki Ren, the lead singer and leader of the group, tried to make a move on her but Rumi gave him a tight slap! Not to mention, he proclaimed that she's "his woman"!!