Rin Kusumi

A door to another world stretches out before a boy who's been brutally bullied all his life. This alternate reality grants him access to all sorts of things, like cheat skills and a portal that lets him travel between his old and new worlds! Can this class loser turn his life around back home...?

The sole surviving human and her canine companion, Haru, wander a desolate wasteland after the destruction of civilization, but this is no dark doomsday tale. Haru, a wise-beyond-his-years talking shiba inu, makes sure his master stays one step ahead of post-apocalyptic pessimism with his clever antics, hilarious observations and philosophical ponderings. She may be the last girl on earth, but with Haru at her side, the road through the apocalypse will never be boring!