Senshū Iwao is a Japanese voice actor who works primarily in adult content, using this name as an alias rather than his real name. His legal name and the name he uses for mainstream anime work is Yosuke Akimoto, born Yukio Tajika. As Yosuke Akimoto, he has an extensive career in mainstream anime and video games, while the Senshū Iwao alias is specifically reserved for voice work in adult games and related media.

Under his real name, he has built a notable career with several major voice roles in widely recognized anime productions. One of his most prominent mainstream roles is Dr. Fuji in the 1998 film "Pokémon: Mewtwo Strikes Back" and its related short "Mewtwo's Birth". He also voiced Dick Allen in "Mobile Suit Gundam 0083: The Last Blitz of Zeon". His other significant anime credits include roles in the Lupin III franchise across multiple films such as "Lupin III: Bye Bye Liberty - Close Call!", "Lupin III: Mystery of the Hemingway Papers", and "Lupin III: Seven Days Rhapsody". He has also appeared in "Detective Conan Episode One: The Great Detective Turned Small" as Takanori Sewa.

While the search results confirm that the Senshū Iwao alias exists for adult work and that the user's example role of Howard Harvest in "Princess Holiday" falls into this category, the available documentation focuses primarily on his mainstream credits under his real name. The search results do not provide a detailed breakdown of his adult content filmography specifically under the Senshū Iwao alias.