Huge Crystallized Charge Key Item

From the chest after defeating master Kohga as part of the questline: Master Kohga of the Yiga Clan.

Reward from the chest after defeating Master Kohga a third time.

Reward for defeating Colgera, the Wind Temple boss, during this rematch in the Depths.

Note: This screenshot is of a different location.

The reward for defeating Marbled Gohma, the Fire Temple boss, is a Huge Crystallized Charge.

Thge Queen Gibdo Rematch in the Depths. The reward for defeating Queen Gibdo again is a Huge Crystallized Charge.

Reward for defeating Colgera during this rematch.

Reward for defeating Queen Gibdo during this rematch.

Reward for defeating Queen Gibdo during her rematch at this location.

Reward for defeating Marbled Gohma, the Fire Temple boss, during this rematch.