Complex sentence: Happosai took Genma and Ranma here for "training" but after seeing the hideous faces of the owners he quickly destroyed it with his "Happo Fire Burst" and ran away, afterwards they ordered Konatsu to get revenge on Ranma, Genma and Happosai.
Split into simpler sentences: Happosai took Genma and Ranma here for "training", but after seeing the hideous faces of the owners he quickly destroyed it with his "Happo Fire Burst" and fled. Afterwards, they ordered Konatsu to get revenge on Ranma, Genma, and Happosai.