He has also worked in advertising, contributing his photographs to various Japanese companies' commercial ads, such as those by Fujitsu and Nippon Oil.
Aida photographed Naomi Morinaga, an actress in 1984's Uchuu Keiji Shaider, for a 1994 book titled W Face.
In the 2000s (decade), he photographed milder erotic pictures of very young models — something quite acceptable in Japan, but not viewed favorably in the west.
There is a comfortable attitude toward lolita among Japanese men, making these photos high-selling items in both regular and e-book formats.
Other popular models under 15 Aida has photographed include Saaya Irie (12), Asami Doi (13), Sari Kiri (13), Azusa Hibino (14), and Yuka Yamaguchi (14).