Petition claims "IDFWU" rapper's lyrics promote rape culture and misogyny.
Rapper reacts after The Biebs gets too close to Ariana Grande.
The Biebs is putting the finishing touches on new release.
The rapper's fashion line with the Japanese brand will debut in April.
The rapper also shares his style must-haves.
King Kendrick tops Billboard, album moves more than 300,000 copies in a week.