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...
That's horrible, though.