Finally evolved into Arachne, "I" embarks on a journey with the Demon Lord and the Vampire Princess, along with their kind. Strange monsters and demon parties sometimes sneak down to human villages to find lodging and meals... Wait, are they leaving "me" behind?! They can't handle me because of my appearance? Hmph. Whatever. The monsters of the surface are delicious, so I won't cry... Meanwhile, the fragments that parted ways with "me" are being sought out by the strongest magician of humanity, who witnesses their unconventional training. And at the moment when the strengthened fragments execute a certain "plan," "my" journey confronts the crossroads of humanity's destruction!