Lingering Echoes is the nineteenth major event and thirteenth Side Story in Arknights.

Operations

Clear 1-10 to access the LE operations.

Back Alleys operations are available in the second week.

All LE operations are worth 28 .

Operators

The following Operators will gain 50% extra Trust (except from Annihilation):

Czerny Ebenholz Hibiscus the Purifier

• Operator Modules can now be upgraded; please see the article and the respective Operators' Modules section for further information.
• Operator Modules added for Mystic Casters and Guardian Defenders.
• The following Operators receive a new Module:
  • Passenger (CHA-Y)
  • Skadi (DRE-X)

Headhunting

Main article: Headhunting/Banners § Current

The Dissonanzen headhunting banner is featured.

Sheet Musics

All LE operations award Sheet Music when cleared, with more being given when the player clears the operation for the first time. Back Alleys operations only award Sheet Musics when cleared for the first time.

Sheet Musics can be exchanged for various items in the Composer's Mailbox.

The best LE operations to farm Sheet Musics are LE-5, LE-6, and LE-7 due to their high Sugar Pack, Grindstone, and Semi-Synthetic Solvent drop rates, respectively.

Spy Base

The Spy Base missions' rewards can be claimed until January 17, 2023.

Mission	Reward
Clear LE-1.	50
Clear LE-2.	50
Clear LE-3.	50
Clear LE-4.	70
Clear LE-5.	70
Clear LE-5 with 3 stars.	1
Clear LE-6.	80
Clear LE-6 with 3 stars.
Clear LE-7.	100
Clear LE-7 with 3 stars.
Clear LE-8.	100
Clear LE-8 with 3 stars.	1
Clear LE-EX-1.	60
Clear LE-EX-2.	60
Clear LE-EX-3.	80
Clear LE-EX-4.	80
Clear LE-EX-5.	80
Clear LE-EX-6.	80
Clear LE-EX-7.	100
Clear LE-EX-8.	100
Clear LE-EX-8's Challenge Mode.
Clear LE operations other than LE-TR-1 and LE-TR-2 15 times.	80
Clear LE operations other than LE-TR-1 and LE-TR-2 45 times.	100
Clear LE operations other than LE-TR-1 and LE-TR-2 85 times.	120

Composer's Mailbox

To buy all items with limited stock from the Composer's Mailbox, the player must spend 4755 .

The Composer's Mailbox is open until January 17, 2023.

Ware	Price	Stock
1	200	1
1	240	1
1	280	1
1	320	1
1	360	1
1	150	3
2	75	2
1	100	5
1	50	10
1	40	10
1	30	10
	50	1
	50	1
	40	1
	25	4
	15	5
1	15	10
1	5	60
1	12	15
1	8	10
5K	7	100
2	5	25
2	3	50
2	1	120
1	4	25
1	2	50
1	4	25
1	3	25
1	2	25
1	6	4
10	2	200
20	1	Unlimited

Store

The following pack is available in the Packs Store, which can only be purchased once per account:

Pack	Content	Price
Dissonance Chip Pack	8 5 210K	US$2.99

Outfits

The following outfits are available in the Outfit Store:

New	Light Gun Adjuster Sport For All Trendsetting Player

Furniture

The Afterglow-Styled Music Room furniture theme is available; some of its parts are awarded from Spy Base while the others are available in the Composer's Mailbox and Furniture Store.

Miscellaneous

Operator Records/Paradox Simulations

New Operator Records/Paradox Simulations are added for the following Operators:

Operator	Operator Record(s)	Paradox Simulation
Aosta	Future Woven	Scattered Pieces
Earthspirit	Distant Relic	–
Ebenholz	Lone Lamp	–
Greyy	Filter Stars	Flickering Meander
Hibiscus the Purifier	Nameless Flower	–
Hung	South Wall	Lump of Gold
Skadi	Endless Journey	Pure Power
Toddifons	Armor and Crossbow	Rain of Fire

CVs

Show

New CVs are added for the following Operators.

Operator(s)	CN CV	EN CV	KR CV
Angelina	–	Lizzie Waterworth	–
Beehunter	Mang Yin (credited as "Duduru" in Global)	–	–
Castle-3	–	–	Choi Seung-hoon
Catapult	Jia Yue (credited as "Hart Lau" in Global)	–	–
Chestnut	–	–	Hong Seung-hyo
Earthspirit	–	–	Chae Min-ji
Estelle	Miao Yang (credited as "Mia Miao" in Global)	–	–
Firewatch	Shisi (credited as "Jingxia Liu" in Global)	–	–
Franka	Vila	–	–
Frostleaf	–	Ina Marie Smith	–
Gavial	–	–	Kim Yu-rim
Gitano	–	Sarah Ovens	–
Grani	Muyaruilin (credited as "Rylynn" in Global)	–	–
Greyy	Z-kun (credited as "Z" in Global)	–	–
Heidi Horn	–	–	Sung Hye-won
Ifrit	–	–	Soyeon
Indra	–	Polly Eachus	Lee Sae-byeok
Istina	–	–	Kim Ga-ryeong
Kazemaru	–	–	Lee Ja-myeong
Lancet-2	–	–	Lee So-eun
Lappland	–	–	Seo Yu-ri
Manticore	–	–	Kim Bo-young
Matoimaru	Qiwen (credited as "Ellen Wang" in Global)	–	–
Mayer	Zi Mao (credited as "Kousou Mao" in Global)	–	–
Meteor	–	Samantha Dakin	–
Meteorite	–	Hollie Taylor	Kim So-young
Midnight	Ma Yang	–	–
Myrrh	–	–	Kang Eun-ae
Nightmare	Zhang Hong (credited as "Elivia" in Global)	–	–
Orchid	–	Susie Riddell	–
Perfumer	–	–	Lee Hyun-jin
Popukar	Chen Yanyi (credited as "Yee Chen" in Global)	–	–
Provence	Xu Chen	–	–
Ptilopsis	–	Heather Nicol	–
Rockrock	–	Clare Louise Connolly	Lee Yu-ri
Savage	–	–	Lee Bo-hee
Scavenger	–	Jennifer Amour	–
Siege	–	Claudia Jolly	Gabin
Silence	Shuang Liang	–	–
Skadi Skadi the Corrupting Heart	–	–	Kim Na-yul
Sora	–	–	Jang Ye-na
Spot	Zhao Yang (credited as "Kyle" in Global)	–	–
Steward	–	Gregg Lowe	–
Vanilla	–	–	Kang Sae-bom
Vulcan	Xiao Mi (credited as "Mimia" in Global)	–	–