Kissanime is a website that distributes copyrighted content without permission, so using it is illegal. Here are some legal alternatives that offer similar content:

Crunchyroll: Crunchyroll is a great free option for anime fans. It has a large library of simulcast and dubbed anime, as well as a variety of manga to read. While there is a premium membership option that removes ads and unlocks simulcast episodes a week early, the free tier still offers a ton of content.

9Anime: 9Anime is another free website that offers a large selection of anime, including simulcasts and dubbed content. It has a simple and easy-to-use interface, and you don't need to create an account to start watching. However, be aware that there can be a lot of pop-up ads on this site.

RetroCrush: RetroCrush specializes in classic anime from the 80s and 90s. If you're looking for a nostalgia fix, this is a great option. They also offer some newer content.

Funimation: Funimation is another great option for anime fans. It has a large library of simulcast and dubbed anime, as well as a growing collection of simulcast manga. They also produce their own original anime series. Funimation offers a free tier with limited content and ads, but a premium membership unlocks everything.

HiDive: HiDive is a subscription service from Sentai Filmworks that offers a smaller selection of anime than Crunchyroll or Funimation, but they focus on more obscure titles and cult classics. They also offer simulcasts of some shows.

Netflix: While Netflix doesn't have a huge selection of anime, they do have a few popular titles, and they are constantly adding more. They also produce their own original anime series, such as Castlevania and Yasuke.

If you know more alternatives to KissAnime. Do let us know.