Is Assemble Insert hentai?

OVA · 1989 · 2 episodes · PG-13 - Teens 13 or older

Comedy, Sci-Fi

A criminal group known as Demon Seed terrorizes Tokyo with its vast armies of mecha. The local police is afraid to confront them, but one person stands in their way: Maron Namikaze, a 13-year-old idol singer with a catchy voice and unbelievable superhuman strength. (Source: ANN)