Houkago no Invader
After School Invaders·放課後のインベーダー
A mysterious "alien portal" has appeared, referred to as "The Space," and is believed to house a "wish machine," an alien artifact capable of granting any wish. In the m-city of Tokyo metro, a girl in a sailor-suit school uniform named Ao Akashiro frequently enters The Space to find the wish machine. Inside, she encounters a "black cat" that communicates through telepathy.