Anime has produced hundreds or even thousands of waifus, or female characters who would be an ideal romantic partner for their real-life fans. Many qualities go into an anime waifu, from a wholesome, positive personality to cool hobbies to a highly protective nature. Some anime fans may be used to seeing a male lover protecting his girlfriend or wife, but some waifus can protect themselves – and others.
Source：https://www.cbr.com/protective-anime-waifus/
