MegaMan NT Warrior

MegaMan dives into the space-time tunnel and follows ShadeMan twenty years into the past. There, he encounters Colonel and teams up with him to save the future. However, the bite left by ShadeMan on MegaMan's neck infuses him with evil energy, transforming his soul into darkness. Lan rushes to connect with MegaMan again, hoping to install a VaccineChip and recover him. He does so just as ShadeMan is deleted, and MegaMan manages to stop his plan, returning the present time back to normal. As MegaMan returns to his time, the dark energy separates from his body and vanishes.