It was a normal day Mercy/Angela was working in her secret lab "By my calculation this we'll make us younger." She decided to use it on D.Va./Hana so she asked if she can come over . "Hey Doc," said Hana. What do you need?Angela asked her if she can drink the chemical. Hana then drinks  it . Mercy 
said, " I'll be back in a few minutes." After a few minutes.She came back with the same chemical in her hand She was surprised too see Hana...Become a Baby She quietly screamed because Hana was asleep.Too be continued coming out too a min near you