In Metaphor: ReFantazio, there are several weapon types available depending on the Archetype lineage of a character. Aside from standard damage and hit applications, weapons can also have multiple effects that include passive and active abilities. Below are the different weapon types available in-game:
Abacus
Axe
Bow
Dagger
Fan
Greatsword
Katana
Khakkara
Knuckle
Lance
Mace
Signal
Staff
Sword
Weapon Purification
Often, weapons can be purified in an effort to increase their stats and ultimately change the weapon into a significantly better one. Weapons can be purified at a church, and St. Fermis Church will prove to be a central locale for this. In order to even begin purification, however, you must increase your Wisdom stats to "Informed." You will also have to obtain Blessed Water.
Increasing Wisdom to rank 2 (Informed) can be accomplished through completing quests that boost this virtue. Blessed Water can often be obtained throughout your travels. Keep an eye out for it and collect what you can so you're prepared for purification rituals when the time is right.
All Katanas
A katana is a weapon type that is used by characters who fall under the Thief archetype umbrella. Below is a comprehensive list of all katanas available in-game. Hover over a specific item for more details.
Weapon
Affinity
ATK
Hit
Effect
Calm Water Katana
Slash
235
96
Comet Katana
Slash
355
96
Dragon Katana
Slash
290
96
Katana
Slash
274
96
Nameless Katana
Slash
140
96
Ninja Blade
Slash
222
96
Beast Fang Katana
Slash
180
96
Normal attacks inflict Poison.
Blooming Katana
Slash
394
96
Increases Dark attack and strength.
Deciduous Katana
Slash
300
96
Increases damage against plant-type monsters.
Sandglass Katana
Slash
160
96
Spider Lily Katana
Slash
240
96
Increases Dark attack strength.
Wind Sprite Katana
Wind
335
96
Normal attacks become Wind affinity.
Filleting Katana
Almighty
280
96
Normal attacks become Almighty affinity.
Fire Mist Katana
Fire
292
96
Normal attacks become Fire affinity.
Ghost Light Katana
Fire
410
96
Normal attacks inflict burn, Normal attacks become Fire affinity.
Sleepy Eyed Katana
Slash
190
96
Normal attacks inflict Sleep.
Dissecting Katana
Slash
420
96
Increases damage against human-type monsters.
Goemon's Hidden Blade
Almighty
500
99
Agility +8, Increases success of stealing skills
Silence
Slash
320
96
Small MP recovery every turn in battle.
Thief King's Katana
Slash
420
99
Agility +5, Significantly increases Slash attack strength. Normal attacks inflict Hex.