Honkai: Star Rail / Light Cone

The Day The Cosmos Fell

Erudition · 4★

Honkai: Star Rail hub →

Details Upgrade costs Sources

Stats & requirements

Path: Erudition
Rarity: 4

Starting stats (first promotion tier)

HP: 43.2
ATK: 21.6
DEF: 15

Upgrade & material costs

Choose a track to see each purchased step and the total material bill. These totals cover the listed steps; character EXP and unlisted costs are separate.

Light Cone promotion0 → 6

Total for the listed steps

Credit308,000

Dream Collection Component15

Key of Inspiration3

Key of Knowledge9

Dream Flow Valve15

Key of Wisdom12

Dream Making Engine12

Step by step

Upgrade	Gate	Materials
0 → 1	Lv. 20	Credit × 4,000Dream Collection Component × 5
1 → 2	Lv. 30 / Rank 1	Credit × 8,000Key of Inspiration × 3Dream Collection Component × 10
2 → 3	Lv. 40 / Rank 2	Credit × 16,000Key of Knowledge × 3Dream Flow Valve × 6
3 → 4	Lv. 50 / Rank 3	Credit × 40,000Key of Knowledge × 6Dream Flow Valve × 9
4 → 5	Lv. 60 / Rank 4	Credit × 80,000Key of Wisdom × 4Dream Making Engine × 5
5 → 6	Lv. 70 / Rank 5	Credit × 160,000Key of Wisdom × 8Dream Making Engine × 7

Light Cone superimposition1 → 5

Total for the listed steps

The Day The Cosmos Fell · S1 sacrifice copy4

Step by step

Upgrade	Gate	Materials
1 → 2		The Day The Cosmos Fell · S1 sacrifice copy × 1
2 → 3		The Day The Cosmos Fell · S1 sacrifice copy × 1
3 → 4		The Day The Cosmos Fell · S1 sacrifice copy × 1
4 → 5		The Day The Cosmos Fell · S1 sacrifice copy × 1

Sources & image credit

Reference snapshot: 24 October 2026.

HoYoverse / COGNOSPHERE

REFERENCE INDEX

All light cone entries →Read about Honkai: Star Rail →

Honkai: Star Rail

March 7th makes the Astral Express feel like a found family

March 7th turns a crew of travelers into something warmer than a transportation service. Her bright camera, chosen name, and curiosity about a lost past make the Astral Express feel like a home being assembled one shared moment at a time.

Character analysis · 3 min

Honkai: Star Rail

Dan Heng's reserve makes room for the Trailblazer's questions

Dan Heng’s quiet presence on the Astral Express can seem like a refusal to engage. In the early journey, though, his archive work and measured responses make him a steady guide: someone who gives the Trailblazer room to ask without turning every answer into a performance.

Character analysis · 3 min

Honkai: Star Rail

Jarilo-VI builds its conflict above and below ground

Jarilo-VI gives its central divide a physical shape. Belobog’s exposed streets and the Underworld’s constrained spaces make the distance between communities tangible, so the planet’s conflict is encountered through movement and perspective as much as through explanation.

Story analysis · 3 min

Honkai: Star Rail

March 7th, Dan Heng, Natasha: three turns and one Skill Point pool

Skill Points turn a party’s separate turns into a shared planning problem. Understanding when a basic attack can carry the next moment, when a skill deserves the resource, and how ultimates fit around that choice makes ordinary battles easier to read.

Game guide · 4 min