2021 Halloween "Butterfly in a Cocoon" Guides & Event Info

Submit Feedback or Error
The Butterfly in a Cocoon Event will begin on October. 12th after maintenance!


The first of the second wave of seasonal events Butterfly in a Cocoon has come to EN! This features 3 full stages on normal and EX difficulties, along with an infinite farming map, previously seen in the Division Collab. A number of upcoming event mechanics are on display here, so consider this a sneak preview from DR and Mirror Stage, as well as a preview of enemies that we'll see in the Jashin Collab. 

Butterfly in a Cocoon continues to brings back the T-Doll Rescue Welfare system that has been around since the White Day Event to somewhat ease the pressure of farming for Dolls and providing a bit of extra incentive to do your daily runs.

While farming enemies and S-ranking stages can drop limited T-Dolls as usual, each battle or S-rank clear in the event will award either a Nova Medal or Platinum Medal.

5★ T-Dolls will cost x500, while 4★ T-Dolls will cost x400.

Medals can also be used to purchase Strawberry Custard Cakes, costing x5 or x5 each. (Limit 200 cakes)

As is the case with previous seasonal events, the enemies changed into seasonal outfits - mixing the SF ghosts from Halloween and White Day, as well as new 'Demon' skins for the Aegis and Nemeums. 

Event Stages & Clear Guides

This event can be easily completed by all Commanders within its duration when on Normal Difficutly. EX will off some challenge to established players. The stages start off very easy, scaling up to eventually offer a decent challenge by the final map. A new Commander who takes advantage of the New Player Career Quest Rewards will have no trouble clearing the entire event before it ends.

Farming map guides are coming soon!

The map clear guides can be seen below! 

Normal Maps
EX Maps

Event Shop

Event Stage clears award Butterfly Mirage x10(x15 on EX), up to x60 per day. They can be used in an event shop featuring a variety of goodies that are useful for all Commanders.

This time the shop's main feature is Tokarev's Halloween costume, purchasable for x150

Sweet Dreams Thief


Enjoyed the article?
Consider supporting GamePress and the author of this article by joining GamePress Boost!

About the Author(s)

aka Soulmuse basically everywhere. Discord: soulmuse#8741.

Guide writer for Girls Frontline. KSG and G3 Propagandist. Writes the occasional fanfic.  

Feel free to send guide suggestions and feedback via DM on Discord or Reddit. You can also find me in the GFL section of the community discord. Also on twitter

(AKA Nonotan, Discord Cleista#7481)

Guide writer and editor for Girls' Frontline, and one of the few people who like its gameplay more than the gacha. Got MICA to pay me 8000 gems once. 

Send guide suggestions and ideas via DM on Discord, or drop some in the #gf_site_suggestions channel on the Community Discord