Iron Lungs is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

In a hyper-industrialised future, Lilac Akita lives her days in a hospital, inflicted by an illness that has rendered her legs useless. However, things change when an eccentric scientist approaches her with the opportunity to pilot a new type of weapon: the Iron Lung.