The One That'll Die is You (死ぬのはてめーだ , Shinu no ha temē da) is chapter 207 of the Beelzebub manga.
Summary[]
Following the defeat of Furuichi and the four Pillar Generals, Takamiya simply scoffs at Oga for arriving too late. He taunts him even further by stepping on Furuichi's head as he still lies on the ground.
Oga is angered at this act and immediately kicks Takamiya in the face, thereby commencing their battle. Following several punches, their brief bout takes a momentary break after Oga launches a nonexplosive Zebul Spell. Unimpressed by the evident lack of killing intent in Oga's moves, Takamiya has his Demon Lucifer arrive to come and assist him in the fight.
Using her abilities, he lands a powerful uppercut on Oga that leaves him momentarily paralyzed; moreover, it leaves Oga confused as he did not anticipate the attack whatsoever. Takamiya is further disappointed by Oga's fighting capabilities and turns his attention over to Furuichi, telling him to die. However, he is distracted by a series of explosive Zebul Emblems sent in his path, as well as a punch from Oga that takes action just before the final explosion; ultimately, this combination of techniques creates mass destruction in the school buildings. However, it only leaves Takamiya with moderate injuries.
Nonetheless, he becomes excited and begins laughing hysterically over Oga's rising power, which he concludes is because of that fact that he involved Furuichi into their battle; indirectly proving that Himekawa's initial statement was true. Takamiya then states that Furuichi still dies anyway.
With that said, Lucifer pierces through his chest with her hand and pulls out his heart; Oga, watching from afar, looks on with horror and silence. As Furuichi collapses from his wounds, Oga screams out his name.