Innocence Island

Legend has it that the three rays of light in the sky are emitted by a prism that grants happiness to the one who obtains it. You never believed in that, but it is your last resort... You do not keep any recollection of the things you were able to do before, but you will be able to recall them through observation and to do them again. For example, you can jump after watching a monkey doing so or swing a sword after watching someone using it during a fight.