When unlocked during the story, Stage 5 has exclusive mod parts with LOW drop rates. Simply collect the large chest and exit the top of the stage. Any other actions or bonuses during the stage do not affect the large chest. These are also all obtainable on Easy difficulty.

Item	Location
Light core	Tiger Tiger Stage 5 large chest.
Master Ether mod	Tiger Tiger Stage 5 large chest.
Master Evasion mod	Tiger Tiger Stage 5 large chest.
Master Luck mod	Tiger Tiger Stage 5 large chest.
Master Muscle mod	Tiger Tiger Stage 5 large chest.
Master Strike mod	Tiger Tiger Stage 5 large chest.
Master Tank mod	Tiger Tiger Stage 5 large chest.