Hiyuki Ascension Materials & Farming Guide

To fully ascend Hiyuki to Lv. 90 and max out the forte board you need 60 Redbell, 46 Our Choice, 26 We Who Question (weekly boss), plus the enemy and forgery series below: 2,200,000 Shell Credits in total (170,000 + 2,030,000).

At a glance

Material	Total
LF Exoswarm Core	29
MF Exoswarm Core	40
HF Exoswarm Core	52
FF Exoswarm Core	61
Our Choice	46
We Who Question	26
Redbell	60
Broken Wing Polarizer	25
Monowing Polarizer	28
Polywing Polarizer	55
Layered Wing Polarizer	67
Shell Credit	2,200,000

Hiyuki ascension materials

Ascension moves Hiyuki from level 20 to 90 in six breaches. Every row is the cost of one breach:

Level	Shell Credits	Materials
20 → 40	5,000	LF Exoswarm Core ×4
40 → 50	10,000	Our Choice ×3 Redbell ×4 MF Exoswarm Core ×4
50 → 60	15,000	Our Choice ×6 Redbell ×8 MF Exoswarm Core ×8
60 → 70	20,000	Our Choice ×9 Redbell ×12 HF Exoswarm Core ×4
70 → 80	40,000	Our Choice ×12 Redbell ×16 HF Exoswarm Core ×8
80 → 90	80,000	Our Choice ×16 Redbell ×20 FF Exoswarm Core ×4
Total	170,000	every material, once each (table below)

Total hiyuki ascension materials

Material	Total
LF Exoswarm Core	4
MF Exoswarm Core	12
HF Exoswarm Core	12
FF Exoswarm Core	4
Our Choice	46
Redbell	60
Shell Credit	170,000

Hiyuki forte materials

The forte board is five main nodes (each leveling 1 → 10), four tier-1 and four tier-2 stat nodes, and five single-rank nodes. The per-level rows sum the five main nodes:

Level	Shell Credits	Materials
Lv. 2	7,500	LF Exoswarm Core ×10 Broken Wing Polarizer ×10
Lv. 3	10,000	LF Exoswarm Core ×15 Broken Wing Polarizer ×15
Lv. 4	22,500	MF Exoswarm Core ×10 Monowing Polarizer ×10
Lv. 5	30,000	MF Exoswarm Core ×15 Monowing Polarizer ×15
Lv. 6	80,000	HF Exoswarm Core ×10 Polywing Polarizer ×15
Lv. 7	150,000	HF Exoswarm Core ×15 We Who Question ×5 Polywing Polarizer ×25
Lv. 8	250,000	FF Exoswarm Core ×10 We Who Question ×5 Layered Wing Polarizer ×10
Lv. 9	350,000	FF Exoswarm Core ×15 We Who Question ×5 Layered Wing Polarizer ×15
Lv. 10	500,000	FF Exoswarm Core ×20 We Who Question ×5 Layered Wing Polarizer ×30
Total	2,030,000	every material, once each (table below)

Total hiyuki forte materials

Material	Total
LF Exoswarm Core	25
MF Exoswarm Core	28
HF Exoswarm Core	40
FF Exoswarm Core	57
We Who Question	26
Broken Wing Polarizer	25
Monowing Polarizer	28
Polywing Polarizer	55
Layered Wing Polarizer	67
Shell Credit	2,030,000

Stat bonus and single-rank nodes

Nodes	Shell Credits	Materials
Single-rank nodes (×5)	30,000	MF Exoswarm Core ×3 HF Exoswarm Core ×3 We Who Question ×2 Monowing Polarizer ×3 Polywing Polarizer ×3
Stat bonus nodes, tier 1 (×4)	200,000	HF Exoswarm Core ×12 Polywing Polarizer ×12
Stat bonus nodes, tier 2 (×4)	400,000	FF Exoswarm Core ×12 We Who Question ×4 Layered Wing Polarizer ×12

Where to farm Hiyuki's materials

Redbell

Local specialty. Found at Overworld routes.

Grows in the wild and respawns every couple of days; interactive-map routes cover a full loop.

Our Choice

Boss drop. Found at Nameless Explorer (world boss).

Claim the reward for 60 Waveplates.

LF Exoswarm Core

Enemy drop. Found at Tacet Discords across the overworld.

The Exoswarm Core series drops from matching enemies; the Synthesizer converts lower tiers into higher ones.

Broken Wing Polarizer

Forgery Challenge. Found at Forgery Challenge.

Open days rotate through the week, so check the Guidebook before spending Waveplates.

We Who Question

Weekly boss. Found at Denia (weekly challenge).

Three reward claims per week, so the full 26 takes about nine weeks.

Shell Credit

Currency. Found at Simulation Training, quests and events.

About 2.2 million Shell Credits in total: 170,000 for ascension and 2,030,000 for the full forte board.

FAQ

How many Redbell does Hiyuki need?

60 in total: 4 at the first breach, then 4, 8, 12, 16 and 20 at each breach up to level 90.

How many We Who Question does Hiyuki need?

26: twenty for the main forte nodes at levels 7 to 10, four for the tier-2 stat nodes and two for the single-rank nodes.

Where does Our Choice drop for Hiyuki?

From Nameless Explorer, the world boss; claim the reward for 60 Waveplates.

How many Shell Credits does it take to fully build Hiyuki?

About 2.2 million: 170,000 for ascension from level 20 to 90 and 2,030,000 for the entire forte board.

Planning the full build? Hiyuki's stats, skills, passives and resonance chains live on the Hiyuki kit page.