宇宙企画
Morikawa started directing adult videos at least as early as 1989 with starring Asako Sakura for the Alice Japan studio. In addition to Alice Japan, throughout the decade of the 1990s, Morikawa also directed AVs for several other "Viderin" companies including VIP, Atlas21, h.m.p., Kuki, Media Station and Max-A. During this time, he worked with early AV Idols Rui Sakuragi, Aika Miura, Yuri Komuro and Bunko Kanazawa.