Released in '94 SFC "Aretha II: Ariel's Mysterious Journey" Manual Can't find the illustrator? Yanoman official X is looking for information

Released in '94 SFC "Aretha II: Ariel's Mysterious Journey" Manual Can't find the illustrator? Yanoman official X is looking for information
It is said that "we have no choice but to rely on the collective knowledge of experts and the Internet."...

The linked article is in Japanese.