Complete the game to unlock the "Premium Adventure" option. Start a Premium Adventure to get a text message from the Kamurocho Newsletter telling you about reports of UFO's. Go to Ebisu Pawn in Kamurocho to purchase a UFO Finder for 10,000 yen. Then, equip it, go to the baseball field in Kamurocho, and climb to the roof to see the first UFO. The second UFO can be found in Onomichi. Climb to the top of the mountain using the stairlift and look over at Onomichi to see it.