So I was reading the first chapters of Zettai Karen Children for kicks and I discovered a MAJOR PLOT HOLE *da da dum*
In chapter 4.5 it is said that Minamoto is a lvl 7 anti anti esper, although, they never really brought that plot point back.
Fast forward ~325 chapters and they made last season's Hyoubu ZKC anime.
In the anime, Andy uses his anti esper powers to stop Yugiri while Minamoto is at the scene. Minamoto's anti anti esper power should overrule.
So the author actually forgot his own plot point about Minamoto.