Eyesoar

is the OoA: of OoA:, the fourth OoA: in.

Characteristics
OoA: appears as a flying eyeball with four smaller eyes that orbit around it, similar to a Series:. As OoA: gradually chases OoA: around the room, its orbiting eyes will increase and decrease their radius to cover more ground. These smaller eyes can be defeated with several strikes from OoA:'s OoA:, but will quickly regenerate. To harm this OoA:, OoA: must use the OoA: so that it penetrates its defenses and hits OoA: directly. This will dizzy the OoA: and scatter the smaller eyes briefly, allowing OoA: to strike OoA: with his OoA: before they return to formation. After taking enough damage, OoA: will be defeated, leaving behind a OoA: and opening the door to the OoA:.

Nomenclature
OoA: shares its Japanese name with Series:, implying that they may be the same creature. Its name is a play on the word eyesore.