Guide Major Update with Word adjust and pictures added 1.0 (22/5/2018)
Guide Major Update with Word adjust and pictures added 2.0 (23/5/2018)
Out of [BETA] stage (23/5/2018)
Reward with picture add 2.5 (23/5/2018)
Fun Fact & Recommend Spell word adjust with updates 3.0 (24/5/2018)
Contain curse joke and sarcasm warning added 3.1 (24/5/2018)
Sand storm remove from recommend list 3.2 (25/5/2018)
Recommend Spell update and adjust 3.5 (27/5/2018)
Guide Major Word adjustment and Special Thx added 4.0 (24/01/2022)

A lot of you might be hard stuck on Just Budget Crisis. One of the last Sub event you need just to do Akko last fight and watch her episode for this Achievement. But no worries, because here is the way to grind them.

The Shopkeeper (Chumlee) at Roundabout. He will put the Pollux Coin in his store for sell. Right after you done this quest.
It's 10,000 per Coin. If you manage to timelap days and nights. Then get running to check his store before you start grinding

• Reloading save file in just only one day with out timelap doesn't change item cycle in the store
  
• He stay around 10:00 AM to 6:00 PM (18:00)

With higher Difficulty, there will be more mob spawn in the zone with more higher drop rate.
I highly recommend you do on

• Very Hard with high mob count and even better drop rate.
  
  
• Easy Slowest way you can grind, Lowest
  mob count and the lowest drop rate.
  
• Normal Less mob in the zone, less drop.
  
• Hard Reasonable drop, somewhere in the middle.
  
• Inferno More time consuming if your skill set are still weak. You're facing more Big monsters count in a single zone.

It's also good to mention that if the Quest fail, you received just exp and nothing back with you. So choose Difficulty as your Character & skill power that you're comfortable dealing with to make a smooth grind.

Key Lv Recommend

• Lesser key of Pollux Lv.1

With higher level key, Mob share higher loot pool than just a Pollux Coin. It will make you get less Pollux Coin than you're supposed be on a single run.

Here's from highest to lowest base luck

• Lotte Drop Luck 15 (Base Luck 14)
  
• Akko Drop Luck: 8 (Base Luck 6)
  
• Sucy Drop Luck 7 (Base Luck 9 )
  
  
• Diana Drop Luck 7 (Base Luck 5)
  
• Constanze Drop Luck 7 (Base Luck 5)
  
• Jasminka Drop Luck 7 (Base Luck 4)
  
• Amanda Drop Luck 6 (Base Luck 3)

It is a good idea to pick Lotte and build her more Luck, with her the highest base Luck from all of the characters.

There are a lot of powerful spell out there. So you don't need to use any of the Character Specific Spell, Signature Spell or Cut scene spell. With this way, you got less time wasted waiting for Cut scene to finish on every grinding.

Highly Recommend Spell

• Rapid Fire (Page 6: Erdanus) Barrage homing balls that's hit like a truck
  
  
• Judgment Rain (Page 5: Aquarius) Fast cast time aoe
  
  
  
  
• Gravity Blast (Page 5: Serpens) Fast cast large aoe line
  
  
  
  
• Meteor Crash (Page 6: Cetus) Obtain by max Flare of Spash (Page 5:Crater)

Utility Spell Recommend

• Icy Dawn (Page 5: Lupus) Fast cast large blob of ice, slow continues damage also work as a wall for a while
  
  
  
• Steel Wind (Page 5: Lyra) Force enemy to drop loot, really low damage
  
  
  
  
• Steel Wind (Page 5: Lyra) Pulls the enemy back in to the screen (some of them got knock off the screen very so often)

Your will received Lesser Key of Pollux (Lv 6) from Headmistress Holbrooke on this Sub event

• It's even Possible to get from No drop to 12 Pollux Coins on just one Run.
  
• Be sure to look out for Bags item that drop from mob. 95% of the times it contain your Pollux Coin.
  
• If Bags can drop off the screen near Door to the Next Zone. Be sure to just walk close to the wall and wait for a moment. The magnet will pull all of your stuffs for you, before process to the next zone.
  
• No need to expect much from Boss drop. They ain't drop Pollux Coin that often. Mostly just there're own loot pool, like Minotour horn, Raging bull horn or Lance stuff.

Cree