Shinazugawa Brothers!! Genya Shinazugawa: 16 years old. Sanemi's younger brother. A good student. Is pretty, sometimes loud and irritated, cool and less annoying than Sanemi. Usually fighting with Sanemi and when It's about girls, he is already red and shy- Sanemi Shinazugawa: 18 years old. Genya's older brother. A neutral student. Is pretty, always loud and irritated, cool and a lot more annoying than Genya. Usually fighting with Genya, and always provoke him.