Loss

is chapter 20 of the Beelzebub manga.

Summary
Two students findShintarō coming out of a toilet at Ishiyama High, startled by his presence. Coming in the bathroom, the students are shocked to find the four MK5 members Shintarō confronted earlier kneeling against the walls with their heads to their upper torsos smashed in.

Aoi and Nene are shocked at what Tatsumi had just done, having plummeted Miwa’s head to the ground and creating a crater. Lifting his head up, Tatsumi finds Miwa extremely horrified at his now disfigured face and the fact that Tatsumi is still standing. Emotionlessly, Tatsumi slams Miwa’s head back into the ground and insults him for being transsexual. Lifting his head up again, Tatsumi finds Miwa still expressing his horror at his cruelty. Tatsumi slams his head back into the ground again, remarking his toughness for still lasting the impacts. With his head up again, Miwa is now crying and complaining of getting struck into the ground in the middle of talking. Finally, Miwa is seen with his head and torso smashed into the ground. Tatsumi is relieved at the silence, and at Beelzebub feeling happier again.

Tatsumi is now ready for Aoi to continue their battle, but Aoi refuses, claiming she has lost. She tries to correct what she just said, but Tatsumi hands Beelzebub over to her, claiming she now has to accept taking care of Beelzebub. Thinking he would be beaten again if found, Takayuki is hiding behind the stairwell, jealous at Tatsumi for supposedly being able to start a relationship with Aoi. Hilda appears behind him, claiming she has lost faith in Tatsumi for refusing to hit a girl. Takayuki is annoyed at Hilda’s sudden appearances, to which Hilda claims he overheard him cheering on Aoi.

Aoi is hesitant on taking Beelzebub, thinking he is Tatsumi’s baby. Tatsumi claims it was forced to him against his will not by his “wife”, but by a demon. Aoi and Nene are under the impression that Hilda is an evil woman who forces others to take care of her kids. Hilda appears in front of Tatsumi and takes Beelzebub away to go home, claiming Aoi is unable to take Beelzebub. As Tatsumi tries to stop her, Aoi tries to tell her off for her supposed cruelty of forcing children on others. In a heated rivalry with Aoi, Hilda proclaims she should get stronger first before complaining.

The next day, Tatsumi and Takayuki are walking in the rain, contemplating their next rival, Hidetora. From behind them, Nene, the new leader of the Red Tails, tries to convince Aoi to come back, while Chiaki just walks with her in support of her resignation. Aoi reveals herself in a regular school uniform in front of Tatsumi and Takayuki as opposed to the cape she wore as leader of the group, claiming to them that she is taking responsibility for what had happened by quitting. As she and her past underlings run ahead of them, Takayuki begins to scold Tatsumi again.

Characters in order of appearance

 * 1) Shintarō Natsume
 * 2) Buu
 * 3) Shimamura
 * 4) Chatō
 * 5) Nakata
 * 6) Aoi Kunieda
 * 7) Nene Ōmori
 * 8) Tatsumi Oga
 * 9) Beelzebub
 * 10) Miwa
 * 11) Takayuki Furuichi
 * 12) Hildegarda
 * 13) Chiaki Tanimura