Raphtalia
Raphtalia is the best girl and emotional anchor of the hit isekai anime Tate no Yuusha no Nariagari, which is also known as The Rising of the Shield Hero. At first, she was a traumatized demi-human slave, but she quickly became Naofumi's most trusted friend and his literal sword. She is the main love interest in the series and the fierce deuteragonist. Honestly, seeing her pull Naofumi out of his deepest despair is one of the most heartwarming things you'll ever see. She's the kind of partner that every isekai hero wishes they had.
Her character design is just a work of art. You can see her cute, fluffy tanuki ears and big, bushy tail sticking out from under her classic fantasy adventurer dress right away. She has long, beautiful chestnut hair and soft magenta eyes that show how kind she is. But don't be fooled by how cute she looks. She has a magic sword and will kill anyone who dares to threaten Naofumi. Fans love her as a top-tier waifu because she is both a sweet, devoted girl and a total badass in combat. It's just too cute to see her get so pouty and jealous when other girls try to flirt with her master.
Anyone who likes fantasy anime needs to have some Raphtalia fanart. Artists love to draw her in beautiful, glowing forests or in dynamic poses with her sword drawn. There are thousands of cute desktop backgrounds of her with soft smiles and cute ear twitches that you can easily find. Having Raphtalia on your screen is always a huge win, whether you want an epic action scene or a heartwarming picture of the best loyal waifu.