The "Red Dragon 8" in "Red 8" is limited to obtaining the costumes of Dojima's Dragon. Fortunately, there are more than one way to obtain these clothes now. First of all, there are two ways to unlock them. Dojima Dragon Clothing: Subscribe to Sega's newsletter, register for Sega account, etc.
How to unlock Dojima Dragon Clothing
In Pirates of Hawaii, there are two ways to unlock Dojima Dragon costumes, but one expires faster than the other.
Subscribe to Sega's newsletter
The first method to obtain clothing is also the first one to expire. You need to register for Sega's newsletter, choose your preferred platform, and your redemption code will be sent to you after the release of "The Pirates of Hawaii". However, you have to do this by February 25, 2025 to get the clothing this way.
Register a Sega account
Sega recently announced its new account service, which allows players to get DLC in Kiryu and Dojima Dragon's special costumes. You need to register for a Sega account and claim this outfit while the offer is still valid. Fortunately, this qualification window is slightly longer and the deadline is 11:59 pm on March 7, 2025 (Japan Standard Time).
When will I receive my redemption code?
The DLC redemption code for Dojima Dragon/Kuroki and Dojima Dragon’s special costumes will be sent after the release of "Pirates of Hawaii" on February 21, 2025. By then, you should receive an email with a redemption code and collection instructions.