- WELCOME U - Kohei by SIMONSAYZ - 2021-01-13
- GET STARTED - Kohei by SIMONSAYZ - 2020-11-25
- T.D.D LEGEND - Kohei by SIMONSAYZ - 2019-02-27
- MOVING - Kohei by SIMONSAYZ - 2018-02-14
- DIAMOND BEAT - Kohei by SIMONSAYZ - 2018-02-14
- Carry on - Kohei by SIMONSAYZ - 2017-09-06
- till the morning comes - Kohei by SIMONSAYZ - 2017-02-08
- FIRE - Kohei by SIMONSAYZ - 2017-01-25
- ビーバイブレーション - Kohei by SIMONSAYZ - 2016-02-17
- オレンジ - Kohei by SIMONSAYZ - 2015-10-28
- my life my time (GLIND HOP) - Kohei by SIMONSAYZ - 2015-08-26
- HOT LOVER - Kohei by SIMONSAYZ - 2015-08-26
- One sky,One way - Kohei by SIMONSAYZ - 2015-07-29
- 夏色キャンディ - Kohei by SIMONSAYZ - 2015-06-24
- 運命のLady 音羽慎之介センターver. - Kohei by SIMONSAYZ - 2015-03-25
- HOME 〜みんなの帰る場所〜 - Kohei by SIMONSAYZ - 2015-03-18
- マジでJIN JIN - Kohei by SIMONSAYZ - 2015-03-04
- 愛、花のように - Kohei by SIMONSAYZ - 2015-02-25
- ZENKAI PLAY - Kohei by SIMONSAYZ - 2015-02-04
- Elements - Kohei by SIMONSAYZ - 2014-12-03
- over and over - Kohei by SIMONSAYZ - 2014-12-03
- マイペース - Kohei by SIMONSAYZ - 2014-10-29
- Deep Moment - Kohei by SIMONSAYZ - 2014-08-20
- Sweet & Sweet CHERRY - Kohei by SIMONSAYZ - 2013-11-13
- Golden Time - Kohei by SIMONSAYZ - 2013-11-13
- U R my Sunshine! - Kohei by SIMONSAYZ - 2013-09-18
- ともだちのうた - KOHEI by SIMONSAYZ - 2013-06-26
- HEY!!! - Kohei by SIMONSAYZ - 2013-02-13
- Miracle 〜song for you〜 - Kohei by SIMONSAYZ - 2013-02-06
- 運命の引力 - Kohei by SIMONSAYZ - 2013-02-06
- AUTOMATIC SENSATION (OAD Ver.) - Kohei by SIMONSAYZ - 2012-10-24
- Sunset Sky - Kohei by SIMONSAYZ - 2012-07-18
- UTAO - Kohei by SIMONSAYZ - 2012-04-04
- Glorious day - Kohei by SIMONSAYZ - 2012-03-07
- Hikari - Kohei by SIMONSAYZ - 2012-02-15
- AUTOMATIC SENSATION - Kohei by SIMONSAYZ - 2012-02-14
- ア・ナ・ロ・グ - kohei by SIMONSAYZ - 2011-03-16
- Number One - Kohei by SIMONSAYZ - 2010-11-24
- my life my time - Kohei by SIMONSAYZ - 2010-11-24
- 夜空へ - Kohei by SIMONSAYZ - 2010-06-16
- Bang!バンザイ!! - Kohei by SIMONSAYZ
- マジでJIN JIN - Kohei by SIMONSAYZ
- Pinkish Heart 愛 - Kohei by SIMONSAYZ