NY Times Manga Best Seller List for May 15th - 21st

Graphic books best seller list (Manga & OEL) for May 15th - 21st

1, Magical Teacher Negima!, Vol.29
2, Black Bird, Vol.8
3, Maximum Ride, Vol.4
4, Black Butler, Vol.5
5, Blue Exorcist, Vol.1
6, Shugo Chara!, Vol.10
7, Fairy Tail, Vol.13
8, Biomega, Vol.6
9, Rosario + Vampire Season II, Vol.4
10, Bakuman, Vol.4

Source: NY Times Manga Best Seller List