Summer Sky Complete Upgrade Material List

When Haku’s wings unfold in the sea breeze, we will eventually meet her domain. In this azure ocean, every wave is a dazzling star, and every tide is a whisper of time. To let this ocean messenger truly show her power, we need to collect her materials and let her shine like waves in our team.
Ocean’s Gifts
In this season of chasing and waiting, we need to collect the following materials to upgrade Haku from level 0 to 90 and maximize her circuit. This is a journey of dialogue with the ocean, a cultivation appointment with time.
Materials Needed:
LF Tidal Residuum (Low-Frequency Tidal Residuum) – 29
MF Tidal Residuum (Mid-Frequency Tidal Residuum) – 40
HF Tidal Residuum (High-Frequency Tidal Residuum) – 52
FF Tidal Residuum (Full-Frequency Tidal Residuum) – 61
Blazing Bone (Scorching Osteon) – 46
When Irises Bloom (The Day Irises Bloom) – 26
Golden Fleece – 60
Impure Crystallized Fuel – 25
Coarse Crystallized Fuel – 28
Refined Crystallized Fuel – 55
High-Purity Crystallized Fuel – 67
Special-Grade Resonance Catalyst – 122
Beacon Coins – 3,053,300
Encounter Under the Moonlight
When we step into this ocean, we will always come across some special gifts. These gifts, like moonlight at night, gently illuminate our path. Haku’s exclusive weapon materials need to be collected with care, just like searching for seashells by the beach, each one so precious.
Materials Needed:
Crude Ring – 6
Basic Ring – 6
Improved Ring – 10
Tailored Ring – 12
Impure Crystallized Fuel – 6
Coarse Crystallized Fuel – 8
Refined Crystallized Fuel – 6
High-Purity Crystallized Fuel – 20
Beacon Coins – 330,000
Pursuit of the Golden Fleece
In the dawn tide, we pursue the golden fleece. It’s like the sunlight by the sea, making our journey warm and full of hope. To upgrade Haku from level 0 to 90, we need to collect the following materials, just like uncovering the secrets of the ocean.
Materials Needed:
LF Tidal Residuum (Low-Frequency Tidal Residuum) – 4
MF Tidal Residuum (Mid-Frequency Tidal Residuum) – 12
HF Tidal Residuum (High-Frequency Tidal Residuum) – 12
FF Tidal Residuum (Full-Frequency Tidal Residuum) – 4
Blazing Bone (Scorching Osteon) – 46
Golden Fleece – 60
Beacon Coins – 170,000
During each breakthrough, we need the companionship of these materials, just like lighthouses guiding us through the ocean.
Breakthrough Requirements:
Level 20:
LF Tidal Residuum × 4
Beacon Coins × 5,000
Level 40:
Golden Fleece × 4
MF Tidal Residuum × 4
Blazing Bone × 3
Beacon Coins × 10,000
Level 50:
Golden Fleece × 8
MF Tidal Residuum × 8
Blazing Bone × 6
Beacon Coins × 15,000
Level 60:
Golden Fleece × 12
HF Tidal Residuum × 12
Blazing Bone × 9
Beacon Coins × 20,000
Level 70:
Golden Fleece × 16
HF Tidal Residuum × 16
Blazing Bone × 12
Beacon Coins × 25,000
Level 80:
Golden Fleece × 20
FF Tidal Residuum × 20
Blazing Bone × 15
Beacon Coins × 30,000
Level 90:
Golden Fleece ×