Blooming

is chapter 214 of the Beelzebub manga.

Summary
Years ago, Zenjūrō Saotome goes to meet Takamiya inside the latter's dark room. Saotome tells the child that he will be leaving to see the world, which he states is a big place.

Saotome reflects on these words that he once said to his elder pupil. As he smokes a cigarette, he stands high above Ishiyama High School, using a Zebul Emblem to levitate himself in the air. He states that he never understood what Takamiya truly desired then but believes that his opponent, Oga, can provide an answer to the questions he asks.

On the rooftop, Takamiya senses a spiking growth of power within Oga; alarmed, he wonders how Oga could still be growing with strength despite the fights that they have had since earlier that night. Afterwards, he is told that Oga barely understood what occurred to him in the past but that he is being a "sulky brat" over what happened then, irritating him. Oga further adds that he will take down Takamiya with Baby Beel's help.

Oga then initiates their fight, summoning forth a massive Zebul Emblem in the sky above, triggering the King's Crest in the three members of the Tōhōshinki who have pledged an allegiance to him. The site astonishes Takamiya who becomes even more worried when he discovers that Takamiya is immobilized by the mysterious technique; however, knowing that, he becomes angered, and furiously attacks Oga. His attacks are fruitless against Oga who swiftly strikes down Takamiya with following attacks. The power of his punch and kick bewilder Takamiya, who cannot comprehend why the fellow first-year can still have such power inside him.

Meanwhile, Saotome tries to comprehend what is the reasoning behind Oga's sudden power-up. He soon realizes that it is a creation from the conflicting uses of Oga's Crest Abilities and Black Techs, leading to the formation of a power which he describes as "annihilation energy". Saotome concludes that similar occurrences have happened before with Oga using the "Father Switch" with Baby Beel and that such a power has finally bloomed before his very eyes; knowing this, he states that Oga has created a unique technique for himself, as well as that Takamiya should not have tried to toy with him.

Suddenly, the massive Zebul Emblem above Oga dissipates and Baby Beel mysteriously disappears from his back. Oga frantically looks around for the infant Demon until he hears someone above him. When he turns to look, he discovers Himekawa and Udagawa standing above him, who are evidently responsible for the abrupt interruption in the fight.

Himekawa faces Oga and apologizes for forcing him to take action so that Takamiya would not lose.

Characters in order of appearance

 * 1) Shinobu Takamiya
 * 2) Zenjūrō Saotome
 * 3) Tatsumi Oga
 * 4) Beelzebub IV
 * 5) Hidetora Tōjō
 * 6) Aoi Kunieda
 * 7) Hajime Kanzaki
 * 8) Lucifer
 * 9) Jabberwock (flashback)
 * 10) Tatsuya Himekawa
 * 11) Yōken Udagawa