The day john survived by being pushed out of the way by his own kid

What if John Lennon had a daughter named Julia who got shot instead of him and survived ? Julia is Sean's little sister . This story is made up it didn't actually happen . Julia is about the same age as Sean when she was shot . John gave birth to Julia in 1977. Yoko had Sean earlier in the year . John got turned into a lady while yoko got turned into a man and they had Julia like 2 years later after they had Sean. I have tried to make it historically accurate.