A homeless man lit on fire while he slept on a Manhattan subway train had an emotional hospital bedside reunion with his son Sunday — as the victim struggles to walk again.

James George had a fiery brush with death last Monday when authorities say a cruel teenage arsonist used a piece of paper to light him on fire as he dozed on an uptown No. 3 train.

“It was a senseless random act of violence,” George told the Daily News in an exclusive interview. “It’s a terrible thing, because there’s no rhyme or reason for it … I was sleeping, and the dude just set me on fire.”

George, 55, suffered third-degree burns from his ankles to above his knees that nearly required amputation. He now faces looming surgery, weeks of recovery and a strenuous battle to ever walk again.

“Some people just wan

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