Amoebarugin is sent to deal with Ken Hoshikawa as he trains three boys who bring him in to help them train in how to master the vaulting horse jump. When FiveBlue and the other Fiveman try to attack it, it continues to revive due to its special ability to revive from anything. However, during one of the revivals, the trio of boys training with Ken end up witnessing the means of revival and bolt to tell their teacher about it, finally mastering the means to vault in the process by leaping over a group of Batzlers. When Ken finds out, he decides to defeat the monster as himself instead of FiveBlue in order to prove to the boys that they could do anything they could put their mind to without revealing who he is or the advantages he has. Throwing a powerful punch at the weakpoint, the untransf