Teen misfits Roma, Toto, and Drop call themselves the Don Glees, an informal name for their backyard adventures. One day, when the trio gets blamed for a nearby forest fire, they set off into the woods to prove their innocence. As disaster strikes their expedition, tensions flare between the friends as they realize that growing up has taken them on wildly different paths in life. (Source: GKIDS)

A school comedy about a mute transfer student, Tadashi Iketo, who is constant­ly shuffled from school to school for his violent nature, though he really is a mild-mannered boy constantly taunt­ed into fights over his simian appearance. Based on a 1989 manga in Young Magazine by Harold Sakuishi. (Source: The Anime Encyclopedia)

Shungo Ninomiya is just an ordinary, run-of-the-mill high school student who lives at home with his older sister Ryoko—at least when she's not away doing her job as a mercenary. However, Shungo's life ceases to be normal the moment a cute girl named Mayu Tsukimura descends into the middle of his school's campus in a military-grade helicopter. It turns out Ryoko sent this girl, along with her older brother Mikihiro, to live at the Ninomiya household. But the newly-arrived siblings are a little special: Mayu is, in fact, a succubus and her brother, an incubus! And as if the circumstances are not problematic enough, Mayu is crippled with androphobia—the fear of men—and it's up to Shungo to help her overcome this at the behest of his sister. Ryoko plans to force Mayu to be closer to Shungo, and to do this, she’ll employ some questionable methods such as having them share the same bed and even take baths together. The situation further complicates when student council president Reika Houjou arrives as the new maid of the Ninomiya family, and she will stop at nothing to thwart Shungo and Mayu’s sexually-geared training. With the sudden arrival of all these oddities, Shungo's ordinary life is about to be thrown into utter turmoil.

Unidentified creatures Archon suddenly appear and bring the human beings to a crisis of extinction. A special corps Goulart Knights is formed to counter attack Archon. The knights have supernatural power to generate Holy Grail from their spirits and battle against Archon.