SOLO works:
for Piano, Toy Piano, Fortepiano, organ and Indian Harmonium

Akiko's Diary (2019)

for Piano 
4 min. (from Cadenza part of Piano Concerto No4 "Akiko's Piano")
Published by Ricordi Berlin

WHIM (2017/2018)

for Piano 
6 min. (from Cadenza part of Piano Concerto No3)
Published by Ricordi Berlin

Spring and Asura　「春と修羅」 (2018)

for Piano
- music written for the movie "LISTEN TO THE UNIVERSE" 映画「蜜蜂と遠雷」のために書かれた音楽「春と修羅」
5 min. (4 versions: Masaru-version, Aya-version, Jin-version, Akashi-version)
Published by Toho Music Corporation

Bright Codes (A, B, C, D) (2015/2016)

for Piano 
3 min. to 15 min. (4 movement work, can be played in any order and any of them)
Published by Ricordi Berlin

Water Path (2015)

for organ
12 min.
Published by Ricordi Berlin

Waves (2017)

for piano
4 min.
Published by Ricordi Berlin

Joule (2009)

for piano
10 min.
Published by Ricordi Berlin

Two Little Piano Pieces: 1) seksek, 2) AYATORI (2011)

for piano
3 min. + 3min.
Published by Ricordi Berlin

Returning (2006)

for piano
4 min.

moromoro (2003)

for piano, tape and video (optional: video by Tomoya Yamaguchi)
8 min.
Published by Ricordi London

Frozen Heat (1998)

for piano
5 min.
Published by Ricordi London

Deepened Arc (1998)

for piano
5 min.
Published by Ricordi London

Crossing Paths (2016)

for (easy) piano piece
6 min.

milliampere (2010)

for toy piano
5 min.
Published by Ricordi London
(there is a guitar version, see "solo string")