Weapon Exchange Shop - How to Exchange and Best Weapons

Weapon Exchange Shop in Kaiju No. 8 The Game. See how to disassemble weapons, get Refinement Crystals, exchangeable 5-Star weapon, and best weapons to exchange in K8 The Game.

Weapon Exchange Shop

Disassemble Weapons for Other Weapons

In Kaiju No. 8 The Game's Weapon Exchange, you can disassemble weapons obtained from the Gacha to get "Refinement Crystals," which can then be used to exchange for other Gacha weapons. This can be done in the "Weapon Exchange" tab in the Shop.

How to Disassemble Weapons

1. Tap Disassemble

You can disassemble weapons from the menu in the upper right of the home screen > Storage. To disassemble a weapon, first tap "Disassemble" in the lower left of the Storage screen.

2. Select a Weapon and Disassemble It

Select a weapon, tap the "Disassemble" button in the bottom right, then tap OK to complete the process. Note that disassembled weapons cannot be restored, so be careful.

3. Obtain Refinement Crystals

By disassembling 5-Star weapons obtained from the Gacha, you can get Kaijumite III and "Refinement Crystals" used for Weapon Exchange.

Important Notes on Exchanging

There are limits and deadlines for exchanges

Please note that there is a limit to the number of times you can exchange, as shown in the table above. Therefore, it is recommended to exchange for high-priority items first.

5-Star AR-Boreas Cannot Be Obtained via Exchanged

The 5-Star AR-Boreas cannot be obtained from the "Weapon Exchange" tab in the shop. If you want the AR-Boreas, get it from the Reno Ichikawa Pickup Gacha, which runs until September 18, or by exchanging Pickup Medals.

Should You Pull Reno Ichikawa?

Best Weapons to Exchange

List of Best Exchanges

Weapon Rating	Equippable Character/Reason
GS-3305 [Rating] ★★★★★	Gen Narumi Supports Gen Narumi, who fights mainly with his Ultimate, with an Ultimate Gauge charge rate buff.
Fs-1002 [Rating] ★★★★-	Isao Shinomiya The DEF increase and DMG Taken Reduction effects both synergize well with Isao Shinomiya's ability to protect allies with a Shield.
Ax-0112 [Rating] ★★★★-	Kikoru Shinomiya Kikoru can apply debuffs herself, allowing her to make the most of Ax-0112's effect that grants increased DMG dealt when attacking a debuffed target.
T-25101985 [Rating] ★★★★-	Mina Ashiro Mina can maximize her potential without letting her buffs expire by alternating between Normal Attacks and Combat Skills.
SW-2033 [Rating] ★★★★-	Soshiro Hoshina Soshiro has his own Critical Hit-related buffs, allowing him to make the most of SW-2033's effect that grants increased DMG dealt on a Critical Hit.
GG-5012 [Rating] ★★★--	Rin Shinonome Rin is an Attacker who fights with AoE Attacks, so she has good synergy with GG-5012, which provides a buff when there are many enemies.

Best 5-Star Weapon Exchange: GS-3305

For the 5-Star Weapon Exchange in the "Weapon Exchange" tab, GS-3305 is recommended if you have Gen Narumi. He is a reliable Attacker, the only permanent 5-Star character with two Elements, and deals high damage against Core Exposed enemies. Equipping his best-in-slot weapon, GS-3305, significantly boosts his performance.

Choose a Weapon for Owned Characters

If you don't have Gen Narumi, you can prioritize exchanging for a weapon for a character you own.

Exchangeable 5-Star Weapon Abilities

5-Star Weapons

Weapon	Best Character and Effect
Ax-0112	[Best Character] Kikoru Shinomiya Slash DMG Dealt +20%. After the wielder uses a Combat Skill, grants the wielder ATK +9% (2 turns), stacks up to 3 times. Before the wielder attacks a Kaiju with a debuff, grants the wielder DMG dealt +15% (2 turns).
T-25101985	[Best Character] Mina Ashiro Shot DMG Dealt +20%. Before the wielder uses a Normal Attack, grants the wielder ATK +13% (2 turns) and Ultimate Gauge Charge Rate +7% (2 turns), stacks up to 2 times.
SW-2033	[Best Character] Soshiro Hoshina SPD+25%. After the wielder uses a Normal Attack or Combat Skill, if it is a Critical Hit, grants the wielder DMG dealt +15% (2 turns). Before the wielder uses an AoE Attack, grants the wielder Slash DMG Dealt +15% (1 turn).
GS-3305	[Best Character] Gen Narumi Slash DMG Dealt +20%. After the wielder uses a Combat Skill, wielder's DMG dealt +5%, stacks up to 3 times. After the wielder uses an Ultimate, grants the wielder Ultimate Gauge Charge Rate +13% (2 turns).
GG-5012	[Best Character] Rin Shinonome Shot DMG Dealt +20%. If there are 3 or more Kaiju on the field, wielder's ATK +25%. When the wielder uses a Combat Skill or Ultimate on a Kaiju with 50% or less HP remaining, wielder's DMG dealt +15%.
Fs-1002	[Best Character] Isao Shinomiya DEF+34%. After the wielder is attacked, grants the wielder DEF +25% (1 turn). If the wielder has a Shield, all allies' DMG Taken Reduction +4%.

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Character List

5★ Character Ratings

Kaiju No. 8	Kikoru Shinomiya	Mina Ashiro	Soshiro Hoshina
Gen Narumi	Isao Shinomiya	Rin Shinonome	Reno Ichikawa

4★ Character Ratings

Kafka Hibino	Kikoru Shinomiya	Mina Ashiro	Soshiro Hoshina
Reno Ichikawa	Iharu Furuhashi	Haruichi Izumo	Aoi Kaguragi
Akari Minase	Eiji Hasegawa	Keiji Itami	Ryo Ikaruga
Kota Tachibana	Tae Nakanoshima