Minoru Mukaiya

We can see Minoru Mukaiya using a MOTIF ES6 on top of his other keyboards, which are presumably also the more flagship- like normal MOTIF 6 (not ES series). This can be seen at timestamp 2:15

The insert from the Casiopea Perfect Live II record lists Minoru Mukaiya's gear used during the concert, listing the Korg DSS-1 in which he uses 2 units.

The insert from the Casiopea Perfect Live II record lists Minoru Mukaiya's gear used during the concert, listing the Yamaha TX-816, in which he uses 2.

The insert from the Casiopea Perfect Live II record lists Minoru Mukaiya's gear used during the concert, listing the SPX-90.

The insert from the Casiopea Perfect Live II record lists Minoru Mukaiya's gear used during the concert, listing the REV-7.

The insert from the Casiopea Perfect Live II record lists Minoru Mukaiya's gear used during the concert, listing the MV-802.

The insert from the Casiopea Perfect Live II record lists Minoru Mukaiya's gear used during the concert, listing the EX-8000.

He can be seen soloing on a Yamaha EX5S around 2:45. He has also used a blue EX5 and an EX5r during the Session 98 performance.

https://www.youtube.com/watch?v=GFQHqiQVdeI&list=LL&index=11

He used the Yamaha EX5 as a secondary synthesizer from 1998 to around 2000 or 2001.

In the music video titled "M.R.I_ミライ" by Katsushika Trio, released on July 5, 2023, Minoru Mukaiya is visibly using the Nord Stage 3 Compact as his secondary keyboard. This video is available on the official Katsushika-Trio YouTube channel.

Minoru Mukaiya can be seen using the Ensoniq VFX synthesizer multiple times, most notably at the 8:11 mark of the "CASIOPEA - [1990] THE PARTY —VISUAL STACK—" performance, where he plays the famous "SYMPHONY" brass preset. This is documented in a video on YouTube.