It's certainly an interesting and nicely designed resource pack. Not to my tastes, but I know many will love it.
However, I just feel I should mention the link you attached at http://www.9minecraft.net/kawaii-world-resource-pack/
9Minecraft is a website which is well known for 'stealing' by reuploading content created by others, including mods, resourcepacks, maps, and shaders. The content is not always the latest version, it's not always supported by the creators, and is not always virus free. Also, downloading from reliable sources such as CurseForge, MinecraftForum (minecraftforum.net) and PlanetMinecraft (planetminecraft.com) can often pay and support the creators, without us spending any money.
It's a bit too adult-themed for my tastes. (Bad joke.)
I used to have a favourite resource pack that make everything look a little bit more medieval, but I stopped using it many years ago when I wanted to explore a new snapshot. I wonder whether it's still being updated.