T kara Hajimaru Monogatari

As soon as he finished the graffiti he listened his mother shouting in the lower floor, so he run there and find that she's trapped in a vortex, he tried to save her but he fails, he tried to used his computer again and he also is send to another world, as soon as he awakes there a young girl appeared and with her help he will try to save his mother and return home.