Kaito is shocked by his parting with Nagare and loses his energy. Sennen gives him a pep talk, and Kaito commences special training to get back Nagare! Shishio Torai volunteers, but only offers useless crash courses, so Kaito heads to a seminar that states it will "teach the crux to guaranteed victory in Hero Battles!" There they find people complaining that they've been cheated...
There wasn't much meaning to it, you know.