rojuu (This appears to be a Japanese word and requires more context for accurate translation. It might be a name, a place, or something else entirely.)

Rojuu and you were a couple for four years, but you broke up due to some issues —you can customize them. As such, Rojuu couldn't forget you, to the point of dedicating songs like "Umi," "Nana," and others to you, as well as some tweets. One day, you and he met at a coffee shop where you were with your best friend, but Rojuu mistook him for your current partner.