A day off... After spending so long training, Reno has forgotten what he's supposed to do with free time. But when he sees that Hoshina is up to something, he goes on a mission to tail him with Iharu!

The day is as normal as it can be in high school as the students peacefully go about their everyday activities until an unprecedented catastrophe strikes the school, killing every person in its wake. Guided by what seems to be a miracle, a handful of students are fortunate enough to be reincarnated into another world as nobles, princes, and other kinds of people with prestigious backgrounds. One girl, however, is not so lucky. Being reborn as a spider of the weakest kind, she immediately experiences the hardships of her dire situation. Even so, she must press on to survive the numerous threats that endanger her life. Discovering that her new world has a system like that of an RPG, she tries her best to hunt prey and defeat monsters to level up and evolve. As she gradually grows stronger, she hopes one day her efforts will be rewarded, and that she will be granted a better life.

It's Specials of Kamitsubaki City Under Construction. Episode 0. Seven years after humanity was devastated by a major disaster, a beacon of science and prosperity rises in Kamitsubaki City. But lurking in its shadows are Tesseractor, monsters born from human darkness. Only the Witchling, five girls with voices that wield magic, stand against them. With every note, they fight, not just to protect the peace of the city, but to heal a broken world.

A dangerous shadow organization launches a campaign of fear and violence in the city of Shinjuku, pushing society to the brink of chaos. As a young police officer tasked with restoring order, Ichika Hoshino becomes the target of an attack, and has a poisonous collar attached to her neck. With the situation spiraling out of control and time running out, five mysterious strangers appear to aid her in her quest for the truth. Who can she trust? Will she be able to save herself and the soul of Shinjuku from the clutches of oblivion?