Wow! Kunieda Aoi in new look. Kinda surprise in this ending since it's not rock or hard rock. Anyway, here is the third ending of Japanese anime "Beelzebub".
Credit: Thanks to thebarnar for HD version of Beelzebub anime ending.
This ending song is Nanairo Namida and the artist is Tomato n' Pine. This ending started in episode 24. Recommend you to don't miss this ending.
Source: Wiki