Maeda is best known for the works of his that have been animated, all of which—coincidentally—fall into the erotic horror subgenre. In the likes of La Blue Girl, Demon Beast Invasion and Urotsukidoji young women are frequently raped by multitentacled horrors. Maeda is credited with the proliferation of the tentacle rape genre and indeed has stated in an interview that he would like "Tentacle Master" inscribed on his tombstone. However, it should not be ignored that Maeda has done sex comedies and BDSM-themed manga as well as erotic horror and a few books suited for younger readers.
Early in his career, with the likes of Evil Spirit Island and Ashita-e Kick Off, he only provided the illustrations while someone else wrote the text for the manga.

In 2001, a motorbike accident left him with a limited ability in his drawing hand to apply the proper pressure needed to draw with ink.

Once worked as NANBA Kenji’s assistant.