The World as we know it has been torn apart shattered by a series of natural disasters that have turned civilization into a brutish nightmare of survival and has left whole cities buried beneath the Earth. It's now a lethal and chaotic place, a place where only the strongest and most savage remain alive. The strongest of them all is a giant warrior known as Violence Jack… Violence Jack tries to avert a civil war brewing among the wretched inhabitants of a subterranean metropolis called Evil Town. Based on a character created by manga horror specialist, Go Nagai. (Source: AniDB)

The story centers on Nayu, a middle school girl who shocks her schoolmates on the first day of school by wearing black lace panties. She likes this kind of underwear, and she tries to "spread the word on the merits of [these kinds of] underwear" via an underwear club with her schoolmates, who are worried about their bodies' development and which underwear to choose.

Third season of the Nobunaga no Shinobi series.

Nike was a simple boy from Boering Village, and the last thing he ever wanted was to become a hero. But when a sign appears from the king of Ainshent Castle Town recruiting heroes to slay the Demon Lord Giri, Nike's father enthusiastically forces him out the door. Along with Kukuri, a member of the Migu Migu Clan, Nike sets out on an adventure to become the legendary hero that the world needs. As Nike and Kukuri travel across different continents, they attempt to learn the secrets of Guru Guru Magic, a strange but powerful type of magic used to seal Demon Lord Giri's power. While reluctantly taking on their assigned quest, the duo does not fail to acquire new comrades and have fun along the way. [Written by MAL Rewrite]