Fans of Japanese manga, anime, and games have all kinds of fun, playful lexicon and slang terms to describe their favorite stories and characters, such as tsundere and moe. Almost any cute character can be moe and any female character is a candidate to be Best Girl, but it takes a truly special character to be someone's waifu or husbando.
Source：https://www.cbr.com/anime-husbando-popularity-explained/
