There are many twin sisters or brothers in anime. The following are some of the more famous ones: 1. Tama Uejo and his twin sister, Haruta Uejo, from the Forbidden Magic Book Catalog. 2. Tanjiro and his twin brother, Toto, in the Blade of Ghost Destruction. 3. Tong Ren and his twin brother Asuna in the Saber-Sword Divine Territory. 4. Akai Shuichi and his twin sister, Akai Mikoto, in Kuroko's basketball. 5. Gregor and his twin brother, Okabe Rentaro, in the Gate of the Stone of Destiny. 6. Night God Moon and her twin brother Night God Zero in the Death Note. Ryuuma Echizen and his twin sister Ryuuma from the 7 tennis princes. Even an 8-year-old idiot would want to fall in love! The male lead and female lead in the movie were also in a relationship! And their twin brother, Chuunibyou Syndrome, also wanted to date! Kim Mu-yan and his twin brother Kim Mu-yan from the Tokyo Ghoul. 10 Magical Girls, Yuan Shika of Yuan Yuan and her twin sister, Miyakura Ai. These are just a small number of examples of twin sisters or brothers in anime. There are many other characters who have twin relationships.