Spider-man Fake Red

Spider-Man: Fake Red by Yusuke Osawa. An Action manga rated Teen, published in English by Viz Media.

Yu Onomae is a friendless high schooler with failing grades until he finds Spider-Man's abandoned suit in an alley and starts pretending to be the hero. But when Spider-Man's enemies strike and it becomes clear the real web-slinger has vanished, Yu has to rely on his rock-climbing skills and sheer determination to fill the role. An original Spider-Man story told manga style.