Why not consider creating a custom piece of artwork that's inspired by his favorite anime series or characters? You could hire an artist to create a portrait of the two of you in an anime style, or even a personalized comic book that features you and your husband as the main characters.
Another great idea is to create a memory book filled with photos and memories of your time together, but illustrated in an anime style. You could include a heartfelt letter or message expressing your love and appreciation for him.
If your husband enjoys cosplay, you could also surprise him with a set of cosplay costumes based on his favorite anime characters to wear together at a special event or convention.
Lastly, you could also consider gifting him an anime-themed experience, such as tickets to an anime convention or a night out at a Japanese-style Izakaya restaurant.
Or you can get him a star map with the date of your anniversary.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.