Kotarou Oohira, a transfer student, does not realize that his cousin's and a classmate's ESP powers are intensified when they touch him, as they face some dangerous situations in school and in the community.
At this point, almost all the humor is gone and the series turns really dark when Koutari, in an attempt to get rid of Tatsuki, kills someone really close to both Tatsuki and Kotarou. And Kotarou, not knowing the truth, blames Tatsuki which makes Tatsuki spiral out of control completely. Tatsuki's powers grow stronger too - he gains telekinetic powers to his post-cog - and he becomes a real danger to himself and to others.
Tatsuki continues on his downward spiral as Koutari continues to cause trouble. Things come to breaking point when Koutari cuts Tatsuki's breaks and Tatsuki crashes killing his grandfather who was riding with him. This series just gets darker and darker belied by the fun vibrant covers.
This shouldn't be news to anyone, but Kazuma's an asshole! His backstory is inserted without any kind of finesse, but I'm excited to watch him break down in the last two volumes. I'm wondering whether they'll forgive him for what he's done (not sure if I want them to, because that would be so cliché, and also, the outcome of what he did this time was disproportionately the worst).