I Don't Know You

is chapter 57 of the Beelzebub manga.

Characters in order of appearance

 * 1) Tatsumi Oga
 * 2) Beelzebub IV
 * 3) Hiromichi Gō
 * 4) Shintarō Natsume
 * 5) Tatsuya Himekawa
 * 6) Mitsuteru Sakaki
 * 7) Azusa Fujisaki
 * 8) Kazuya Yamamura
 * 9) Takayuki Furuichi
 * 10) Ichirō Shinjō
 * 11) Aoi Kunieda
 * 12) Hisaya Miki
 * 13) Harima (flashback)