Context: Kusuo's father, Kuniharu 國春, and mother, Kurumi 久留美, had had a fight and were living in separate rooms. Now, they're back together, so Kuniharu asks Kusuo, who has the power of psychokinesis, to carry the furniture from his room to Kurumi's room, saying that he can't do it himself because he'll be busy carrying something else.
hora... boku wa {mama wo hakobu} no de sei-ippai dakara ne... ほら・・・僕はママを運ぶので精一杯だからね・・・ Look... [it takes my all just] {to carry mom}, [you see]...