After being shown a video of the level 4 metamorph Hatsune and the Level 4 metempsychosist Akira being directed through a B.A.B.E.L. candidacy test which they did not quite pass, Minamoto is charged with helping to polish Hatsune and Akira into induction as B.A.B.E.L. Special Espers. Unfortunately, Minamoto devotes so much to this assignment that he frequently overappraises Hatsune's inhibitions with regard and proximity to food and begins to neglect his esper charges who jealously accuse him of abandoning them. After Hatsune is refined to avoid capitulation to her hunger for an hour, it is decided that Hatsune and Akira be wielded against Kaoru, Shiho, and Aoi at their natural Level 7 potency designation in a sort of flag football/scavenger hunt exercise. When he and Taizō decide to play hardball, Hatsune makes a frantic flight with Minamoto as her payload after developing the fallacious and feral notion to claim him for herself. Forrtunately, Kaoru signaling her mortal intentions against her convinces Hatsune to stand down and return Minamoto who declares that he intends to stay The Children's supervisor after Hatsune and Akira's induction into B.A.B.E.L. as The Hound Special Esper Team.
バベルの研究所で模擬戦闘訓練が行われようとしていた。皆本が指揮するのは、もちろんチルドレンの３人・・・・・・ではなく、見慣れない少年と少女の二人組。少年の名は宿木明。そして少女の名は犬神初音。二人とも、特殊な超能力を持つバベルの特務エスパー候補生である。この戦闘訓練は、二人を正式採用するための試験なのだ。二人が試験に合格するための条件、それは、『ザ・チルドレン』に勝利すること！！最強最悪のレベル７相手に、皆本たちはどう戦うのか！？
