The Yakuza: Like a Dragon Crafting Mat Set includes Materials Pack: Common, Materials Pack: Uncommon, and Materials Pack: Rare. These materials can be used to craft in-game items and equipment at the Romance Workshop in Yokohama.

Materials Pack: Common includes:
Quality Lumber x20
High Quality Lumber x20
Sturdy Iron x20
Refined Iron x20
High-Purity Lead x20
Tempered Steel x20
Immaculate Pane x20
Tempered Glass x20
Dull Aluminum x20
Gleaming Aluminum x20
Smooth Hide x20
High-End Leather x20
Beautiful Cloth x20

Materials Pack: Uncommon includes:
Highest-Quality Lumber x20
High-Quality Cloth x20
Reinforced Alloy x20
Superalloy Steel x20
Tempered Safety Glass x20
Tungsten x20
Full-Grain Leather x20
Odd Stone x20
Mysterious Stone x20
Toughness Infinity x3
Tauriner Maximum x3
Staminan Spark x3
Resurrection Bolus x1

Materials Pack: Rare includes:
Empty Cough Drop Tin x3
High-Density Metal x3
Silver Ingot x3
Gold Ingot x3
Pearl x3
Raw Platinum Ore x3
Raw Ruby Ore x3
Raw Sapphire Ore x3
Raw Diamond Ore x3
Toughness Infinity x3
Tauriner Maximum x3
Staminan Spark x3
Resurrection Bolus x1