Only a handful of dads will ever know what it’s like to watch your young child go through cancer treatment. Unfortunately, Josh Marshall is one of them, and he’s going to great lengths to ensure his son Gabriel isn’t self conscious about his body, surgery scar or anything else that comes with cancer.

Over a year ago, eight-year-old Gabriel was diagnosed with a rare malignant brain tumor, anaplastic astrocytoma. He had to get surgery, which left him with a scar on the right side of his head.

“This broke my heart,” Marshall told Buzzfeed. “I told him if people wanted to stare, they could stare at both of us,” he said, referencing his new tattoo, one that resembles a scar.

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