Operation Babel: New Tokyo Legacy

Story related and cannot be missed.

Unlocks after completing the mission "Green Museum Search".

Go to Tokyo Mid Hills. Then Green Museum. In this map, you'll need to collect at least 10 Green Orb Fragments and create a Green Orb before you can proceed to the boss. Make sure to have a Curry Care on hand to give to Hachi to earn an item. There are 11 Green Orb Fragments total, so you can miss an orb. Here are the orb fragment locations:

Zone A

• X07 Y00 - There is a fight here.
• X02 Y16 - There is a fight here, and you actually earn 2 orbs. There is also Hachi scene where you can use Curry Care to gain the Hachi Workout item. Equipping this item increases Variants' level, so it's useful for leveling up.

Zone B

• X03 Y15 - There are some bodies here, and a fight.

Zone C

• X13 Y00 - No fight.
• X02 Y11 - No fight.
• X00 Y03 - There is a fight here.

Zone D

• X14 Y18 - All party members take damage before the fight, so heal up before heading here. Win the fight.
• X19 Y08 - No fight.

Zone F

• X11 Y04 - Check with . There is a fight.
• X04 Y11 - No fight.

After collecting 10 fragments, craft the Green Orb in the Development Lab. Once the Green Orb is created, you can head to the center area. Head to the portal at X17 Y0. In the Core Floor, you'll fight Buccaneer. Buccaneer can kidnap units, so have some Riser Decoy items ready.