Finally, a year ago, I found him... but I realized I no longer had the strength or skills to catch him. From that day on, I have been waiting for someone who can kill the monster for me. That is you. He... or should I say Godzilla, is nearby. Kill him for me. Please, avenge the death of my father!"
Head directly south of where Hunter Ken is standing. If you miss killing him or can't find him don't worry, Godzilla re-spawns every 10 minutes. Though the quest can be obtained at level 16, it is recommended you be several levels higher, have a high level pet or have assistance from one or more other players. Also be mindful of the champion monsters nearby. Defeat Godzilla and return to Hunter Ken.