Takes place when y/n and Tom are 5 and 6

Me and Tom were playing in his room, he is showing me his collection of items and I'm playing with them.

Until something white caught my eye, it was a grey hair.
"What's that?" I say as I point out something in his hair

He looks in the mirror, his face fell when show the grey hair. He plucked it out. He looked at it and starting hyperventilating

"I'm going to die" is all he said before he passed out