Matsuko Mawatari(馬渡 松子,Mawatari Matsuko?, born December 17, 1967) is a Japanese singer-songwriter. She is known for having written "Hohoemi no Bakudan" (Smile Bomb), which is the opening theme for the YuYu Hakusho anime series. She also sang a few other songs from the same anime, such as "Sayonara Bye Bye", "Homework ga Owaranai", and "Daydream Generation".
In the early 1990s, Mawatari Matsuko opened for the band Dreams Come True for their tour. She has also released five studio albums, four from Anime record label Remoras, and one from her own label, Pit'A'Pat. According to her website, she has retired from the music business. However, in 2012, it has been released a new album named KiseKi with the songs 1. PC Dakegashitteiru ; 2. Precious; 3. Netsu; 4. Middle Voice; 5. Kokorokoujou; 6. Time On Time; 7. B Gata; 8. Only Place; 9. Let Me Return Again; 10. AIR.