Lethe is one of the Partners in Arcaea. She is obtained by purchasing the Ambivalent Vision song pack.



Lethe in Greek mythology is the goddess of forgetfulness and oblivion. She is also named after a river in Greek mythology, where anyone who drank from that river will experience forgetfulness.[1]


Lethe has long, light brown hair with uneven bangs and yellow eyes. Part of her hair is braided and held in place by a large off-white ribbon. Her ears are pointed and a pair of off-black horns protrude from her head.

She wears a dark gray knee-length dress with red-orange lining, as well as an off-black corset vest with a feathered collar. A pair of crosses are attached to the ends of her vest and another, red-orange, garment is visible beneath. She also wears a pair of light gray flared sleeves beginning at the elbow, which end in off-white frills at the bottom and are feathered at the top, and accented with small red-orange bows. A pair of off-white gloves cover her hands and yellow-orange sleeves cover most of her upper arms. She wears light gray stockings and dark gray platform heels.

Lethe wields a large, elaborate scythe with an off-black horned skull attached to the end opposite the blade. She is generally depicted holding it by the skull and not the handle.


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The following section of this article contains spoilers. Proceed with caution if you have not read the Story yet.
Divider story

Adverse Prelude

Story adverseprelude
Divider sidestory

Absolute Reason

Story absolutereason

Story cyaegha

Crimson Solace

Story crimsonsolace

Story gloryroad

Ambivalent Vision

Story ambivalentvision

Story corpssansorganes


Story meeting

Luminous Sky

Story luminoussky

Vicious Labyrinth

Story viciouslabyrinth

Eternal Core

Story eternalcore
Partner 01 Partner 02 Saya-0 Partner 03 Partner 05


Lethe can awakened at Level 20 since v2.6.0 by consuming:

  • 25 Ambivalent Cores.
  • 5 Desolate Cores.

Stats by Level

LEVEL 1 2 3 4 5 6 7 8 9 10
FRAG 47 47 47 47 48 49 50 52 54 57
STEP 60 60 60 60 61 62 63 66 68 72
LEVEL 11 12 13 14 15 16 17 18 19 20
FRAG 60 63 65 67 68 69 69 69 69 70
STEP 77 81 83 86 87 88 89 89 89 90
LEVEL 21 22 23 24 25 26 27 28 29 30
FRAG 71 72 73 74 75 76 77 78 79 80
STEP 91 92 93 94 95 96 97 98 99 100


Lethe is functionally similar to Tairitsu (Axium), and is the reverse of Kou at level 20 in terms of raw stats.

  • Her maximum FRAG stat translate to 1.40x fragment multiplier.
  • Her maximum STEP stat translate to 1.80x step multiplier for World Mode.

It must be noted that Lethe's skill will flip the chart horizontally. This can serve the purpose to help players having problems with certain sections that are dominant to a specific hand or break an already built up muscle memory to keep players independent of muscle memory. Not taking Lethe's skill into consideration means that she is functionally identical to Tairitsu (Axium).

After awakening, Lethe loses the MIRROR skill and instead gains another skill which partially blots out the following parts of the Play Screen with ink marks:

  • FR/PM indicator
  • Combo counter
  • Score counter

As such, bypassing her awakening is a valid strategic consideration.



This section is a stub. You can help by contributing information to it.


Starting Partners HikariTairitsu
Story Partners Tairitsu (Axium)Tairitsu (Grievous Lady)Hikari (Zero)Hikari (Fracture)
Side Story Partners KouLetheEtoLunaSayaKanae
Collaboration Partners SapphireStellaHikari & FisicaTairitsu & TrinHikari & SeineTairitsu (Grievous Lady) & Chuni Penguin
Soundtrack Partners Hikari (Fantasia)Tairitsu (Sonata)
Limited-Time Partners IlithShirabeHikari (Summer)Tairitsu (Summer)AyuEto & LunaYumeNono ShibusawaHaruna MishimaRegulus (MDA-21)Pandora Nemesis (MTA-XXX)Chuni PenguinSiaDORO*C
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