The Seven Deadly Sins: Persona Collab Coupon and Diamond Guide

To claim Persona collaboration rewards in The Seven Deadly Sins, submit your account identifier on Netmarble's redemption site and complete time-limited event missions in the game. External coupon codes and in-game milestone activities provide the primary sources of free Diamonds during the event period.

How to Redeem Persona Collab Codes on the Netmarble Portal

Coupons for The Seven Deadly Sins cannot always be redeemed directly inside the game client, particularly on iOS devices. Players must use Netmarble’s external redemption website to route promotional items to their in-game mailbox.

1. Open The Seven Deadly Sins on your device.
2. Tap the menu icon, open Settings, and select the Account Info tab.
3. Locate your Member Code (Netmarble ID) and copy the text string.
4. Open a web browser and go to coupon.netmarble.com/nanatsunotaizai.
5. Select your active server region from the drop-down menu.
6. Paste your Member Code into the account field, enter your promo code, and confirm.
7. Restart your game app to force a server refresh, then collect the items from your in-game mailbox.

Common Redemption Errors

• Server Mismatch: Codes released for specific regional broadcasts (such as Korean or Japanese streams) will return an invalid code error if entered on a Global account. Always match the code to your server.
• Mailbox Expiration: Items sent from the portal do not stay in your inbox indefinitely. Claim your delivered Diamonds and consumables immediately upon logging in so the mail timer does not lapse.

In-Game Diamond Sources During the Persona Collaboration

External coupons offer only a small portion of the total promotional currency available during the event. To build a sufficient reserve for banner summons, prioritize the following in-game milestones:

• Collab Login Calendar: Check in daily across the campaign to collect attendance sheet rewards, which include lump-sum Diamond handouts.
• First-Clear Stage Rewards: Clear all limited-time Persona collaboration story and event stages to obtain one-time Diamond drops.
• Daily Event Quests: Clear daily collab tasks and event boss encounters to maintain steady milestone progress before the event shop and campaign close.

Persona Banner Investment Considerations

Crossover heroes such as Joker and Queen offer specialized debuff mechanics and damage burst for Human or Unknown team compositions. However, collaboration banners carry distinct upgrade constraints:

• Limited Duplicate Availability: Once the collaboration event departs, hero duplicate coins needed to level up Ultimate Moves cannot be obtained through standard coin shops or regular summon pools.
• Pity Requirement Planning: Avoid spending Diamonds incrementally on single pulls. Accumulate free Diamonds from logins, quests, and coupons until the final days of the event. Calculate your total currency against the banner guarantee threshold to verify whether your account can reach the pity milestone before committing your stash.