Zoku Owarimonogatari

The morning after his high school graduation, Koyomi Araragi stands in front of his bathroom mirror when he suddenly feels like his reflection is staring back at him. Upon touching the glass, his fingers sink right through, pulling him into a bizarre reverse world where everything he knows is flipped. In this mirror reality, the people around him display drastically different personalities, and his past regrets take on a physical form. Faced with an uncertain future and unable to move on to college, Araragi must navigate this strange dimension to find a way back home and finally bid farewell to his supernatural youth.