fall in love [2005.09.21] Shiawase na Kimochi (しあわせな気持ち) [2006.04.26] bless you [2006.05.24] We Are [2007.05.23] Namida ga Tada Koboreru Dake (涙がただこぼれるだけ) [2007.08.01] Manatsu no Yoru no Yume (真夏の夜の夢) (Matsuda Seiko x Fujii Takashi) [2007.11.21] Christmas no Yoru (クリスマスの夜) [2008.03.19] Hanabira Mau Kisetsu ni (花びら舞う季節に) [2008.06.25] Love Is All [2008.10.22] Ano Kagayaita Kisetsu (あの輝いた季節) [2010.04.21] Idol Mitai ni Utawasete (アイドルみたいに歌わせて) [2010.05.05] Ikutsu no Yoake o Kazoetara (いくつの夜明けを数えたら) [2011.11.23] Tokubetsu na Koibito (特別な恋人) [2012.05.02] Namida no Shizuku (涙のしずく) [2013.05.22] LuLu!! [2013.10.30] Yume ga Samete (夢がさめて) [2014.05.21] I Love You!! ~Anata no Hohoemi ni~ (I Love You!! ~あなたの微笑み~) [2015.10.28] Eien no Motto Hate Made / Wakusei ni Naritai (永遠のもっと果てまで/惑星になりたい) [2016.09.27] Bara no Yoni Saite Sakura no Yoni Chitte (薔薇のように咲いて桜のように散って)