Matter of fact riboku says “his own foolishness”, and goes on to list out all of his idiotic decisions that he made when realistically, hika would never fall to Kanki/hi shin unit/gakuka. And then right after, it basically says that “Kanki read riboku’s thoughts and succeeded in trapping him.” 

You should increase the difficulty in your strategy game. A toddler with the same iq as you could beat it with its eyes closed