Akira Komeda / Akira Yoneda ?
I think many sites out there are currently displaying wrong information.
https://www.mobygames.com/images/covers/original/1549449856-671304405.png (one of the manuals from Phantasie Memorial Set)
There's the artist Akira Yoneda (AY) and Akira Komeda (AK). I think they are actually different persons?
This image displays AY signature though... https://66.media.tumblr.com/a0badeed90ce1c59e1ec018bbb102b15/tumblr_p32ug96oCv1ulp8mfo1_1280.jpg (looks like Komeda website also displays this cover so it can be confusing)