Play Story mode and select any Ultraman except for Leo and Mebius. Continue playing until Mother of Ultra and Father of Ultra states that Zoffy will recover for three days. Complete the first fight when the training session now starts with the other five Ultras. Then in the second fight press 'Start' and exit and save the game. Return to the PSP 'Home' screen and enter the system settings and advance the system date by three days. If you now continue Story mode and complete the training session an alternate Story mode will play out. If you press R during the battle with Temperor Seijin you will get a clue from Father of Ultra on how to win. During the fight increase your power into the yellow area and allow Temperor Seijin to max his power. Allow him to use his power and then immediately use shield. This will casue his beams to reflect back to him. Ultra Father will now become unlocked when you complete Story mode.