Fortunately, Joi's psychic powers also foretell a simple solution to the problem: Kakeru just needs to deliver a few stacks of magazines to his school, while making sure to always step on staircases with his left foot first. (Seriously.) What Joi forgot to consider was that Kakeru is, well, an idiot; he eventually forgets which foot will lead to the destruction of the world as he knows it, and winds up ambushed by the Farmers' psychics when he uses the wrong foot. This ambush mainly involves Takemaru, an ultra-sadistic psychic with an even more powerful form of Sho's "psychokinetic" powers from the last volume. Maya drops in for a brief (and mostly ineffective) attack, but ducks out pretty quickly when it doesn't go anywhere.
After the funny (if crude) few opening pages, the story goes completely downhill as Aoki takes many of the complaints I had with first volume and amplifies them to a frustrating level. There are little snippets of plot advancement peppered throughout the second volume to tease the reader; but otherwise, the whole thing degenerates into a pile of tacky shonen manga clichs, uninspired action sequences, and often-tasteless fanservice. The fact that Joi defuses a psychic attack by flashing his teacher's breasts (without even asking her first, no less) should give you an idea of the depths that Psycho Busters's writing has plummeted to. And the less said about the sentimental nonsense that caps off this volume, the better.
If there's a single silver lining to this dark cloud, it's that Nao's art is just as strong as ever. But unless you're reading Psycho Busters just for the artwork's sake, I can't really find enough redeeming value in the second installment to justify picking it up.