Son of Skyress
Set during Mechtanium Surge (Arc 2) When Shun fought against Wiseman and Nonets alone, he didn't leave the battle unscathed. Just as Skytruss and Orbeum, Jaakor's former students, prepare to return to New Vestroia, Shun collapses. The only choice of action the Bakugan can think of is to take him back to their home...